英汉词典

back back - seat driver back - up battery back - up copy back - up system back ... up back a bill back a chain back a check back a cheque back a horse back a note back a sail back a winner back accent back ache back acknowledge back across back acter back action back action haymaker back action lock back again back against back against the wall back against(on to) back alley back alley news back alleys back alleyway back alleyways back altitude back ampere turns back ampere-turn back ampere-turns back an anchor back analysis back anchor back and belly back and breast back and edge back and fill back and fill to back and forth back and forth construction back and forth method back and forths back and forward back and forward motion back and leg dynamometer back and side back and stopping trial back angle back angle of scattering back anno back annotation back announce back answer back answers back arc back arc area back arc basin back arc spreading back arc subduction back arch back area back around back asswards back astern back at one back at square one back at the farm back at you back away back away (from) back away from back axle back azimuth back bacon back balance back band back bar back barrier complex back bay back beach back bead back beam back bearing back bearing box back beat back beats back belt back bench back bencher back benches back bend back bend molding back bending back bevel back bevel angles back bias back bias circuit back bias voltage back biasing back biter back biters back blade back blading back blast back blocks back blow back board back boarding back body back boiler back bolting back bond back bonding back bone back boom back born wire back bottom roller back boundary cell back boxing back brace back braces back bracing back bracket back brake back break back breaker back breakers back bridge relay back bridge wall back brusher back buffer back bulb back burn back burner back burners back button back buzzer back calculate back calculation back cam back camber back cap back cap and quadrant tap bolt back cap, back-cap back carbon back cargo back carry race back catalog back catalogue back catalogues back catch back cavitation back cavity back center back centre back chaining back channel back channels back character back charge back charges back chat, backchat back check back check cloth back chipping back chroming back circle back circles back clamping back cleaning back clearance back clearance angle back clevice back clip for reed cap back clipping back clipping plane back cloth back cloth batten back coal back coat back coating back cock back coil back column back combing drum back combustion back coming back component back concentric bend back conductance back conductance ratio back cone back cone angle back cone distance back cone radius back cone tooth profile back cone( normal cone) back connected fuse back connected instrument back connected switch back connecting rod back connection back connection type back connection type instrument back contact back contact proving back contact solar cells back contact spring back contamination back contract back coordination back copies back copy back cord back corner back corners back corona back countries back country back county back couple back coupler back coupling back coupling coefficient back coupling oscillator back course back course sector back court back cover back crawl back crease back cross back cross rail back crosses back crossing back cupping back current back current brake back current step back curtain back curve back curved vane back cushion back cut back cut-off power recorder back cutting back cutting weave back cylinder cover back cylinder head back data back date back dated bill of lading back dating back dead centre back deep back diagonal pass back diffusion back digger back diode back direction back discharge back discharge extinguishing voltage back discharge propagation back discharge reentrant back discharge vanishing temperature back dive back dividend back dividends back doctor back donating bonding back donation back door back door interference Back Door Listing back door man back door selling back doors Back Double back double biceps back down back down from back down off back draft back draft zone back drain back draught back drawing roller back drilling attachment back drive back drive shaft bushing back drop back drying machine back dump back duty back dynamometer back e.m.f cell back e.m.f.cell back e.m.f.constant back East back eccentric back eccentric wheel back echo back echo reflection back eddy back edge back edging back elector-motive force back electromotive force back electromotive force cell back electromotive force coefficient back electromotive force constant back electromotive-force constant back electron transfer back elevation back elevation drawing back emf back emf cell back EMF coefficient back emission back emission electron radiography back end back end generator back end generator language back end plate back end processor back end sill back end system back end-to back endplate back ends back engagement of cutting edge back engagement of the cutting edge back entrance back entrances back entry back exercise back exercises back extract back extraction back extraction method back face back face dry back fall back fat back fat fleshing knife back feed back feed factor back feed phase back feeding back feet back fence back file back file, backfile back fill back filled region back filler back fillet back filling back filling behind abutment back filling mangle back filling system back filter back financing back finishing machine back fire back fire arrester back fire(back arc) back fire(back firing) back fires back firing back five back flap hinge back flash back flash arrester back flashover back flip back flip, backflip back flip, backflipped back flip, backflipping back float back floating position back flow back flow of sewage back flush back flush peak back flushing back focal distance back focal length back focal plane back focus back focus distance back follower back foot back foot backside hang back foot leaning hang back for back force back formation back formations back forties back forty back forty, back 40 back four back frame back freight back frictional material back from back front back full back furrow back ga(u)ge back gage back gammon player back garden back gardens back gate back gauge back gear back gear ratio back geared motor back geared upright drill press back gearing Back Gears back geosyncline back gimp back gluer back goods freight back gore back gouging back green back grey back grey guide back grey roller back grey washing plant back ground back ground current back ground effect back ground noise back ground noise level back grounding back guide back gutter back guy back half back half of the stalls back hand back hand welding back handed rope back hang back harness back haul back haunch fillet of arch Back haus, Wilhelm back head back head brace back head brace angle back header back hearth back heating back heel back height back hitch back hoe back hoe dredge back hold position back hole back holes back home back hook back house back houses back housing back illuminated back illumination back impact back impeller back in back in action Back in the Box back in the day back in the days back in the game back in the saddle back in time back incline back indication back induction back injury back inlet gully back interface trap density back into back iron back issue back issues back jack-knife stroke back jamb back joint back joint carrier back judge back judge,backjudge back judges back jump back key back kick back kip back kiss roll back kitchen back kitchens back knee back knife lathe back knife plate back knotter Back L. back labor back labors back labour back labours back laid rope back lamp back land back lands back lane back lapping back lash back lash phenomena back lash spring back layer back leakage current back leaning rest back lease rod back leg back length back letter back levee back level hang back lever back Lift back light back light compensation back light display back light shutter back lighting back lighting bulb back limb back line back liner back lines back lining back lining strip back link back links back lintel back list back lit back load back loader back loading back lobe back lobes back lock back locking back log back loop back lot back lug back magnetization back man back margin back mark back marsh back masking back matter back matters back measurement back mesurement back metal back microbevel back migration back mill table back mirror back mirrors back mixing back molding back money back month Back Months back mortaring back motion back moulding back mounted back moving spring back muscles back mutation back nail back nailing back neck back neck point back needle back nine back noise back number back numbers back nut back o' beyond back o' Bourke back oars Back oars! back observation back of back of a book back of an envelope back of arch back of bearing back of beyond back of blade back of Bourke back of cam back of carpet back of dam back of film microscope back of foot back of hand back of head back of house back of levee back of lode back of nose back of one's hand back of ore back of panel mounting back of photographic lens back of piston ring back of the hand back of the house back of the saw back of the wind back of tool back of tooth back of twill back of weld back of wind back off back off compensate back office back office box back office force back office function back office staff back offices back offs back on back on his feet back on my feet back on one's feet back on one's heels back on ones feet back on our feet back on the job back on the streets back on to back on track back on your feet back onto back onto sth back opening door back order back order cost back order memo back order memorandum back order sales back ordering back orders Back Orifice back oscillation back out back out (of) back out of back out routine back outlet return bend back over back overdraft back pack back pack camera back pack parachute back pack transmitter back packs back pad back page back pages back pain back pains back painting back panel back panel wiring back part of stage back partition back pass back passage back passages back passes back patching back pay back payment back payments back pedaling brake back piece back pile thread back pillar die set back piston back pitch back plan back plane back plastering back plate back plate molding back play back pocket back point of last bottom back pointer back pollinating back pollination back poppet back porch back porch interval back porch of pedestal back porch period back porch sample pulse back porch tilt back porches back pork Back port give way starboard! back post back post die set back pour back pouring back power back premises back pressure back pressure armlift method back pressure condensate return system back pressure control back pressure curve back pressure effect back pressure evaporation back pressure evaporator back pressure extraction turbine back pressure factor back pressure governor back pressure manometer back pressure multi-effect evaporator back pressure of steam trap back pressure operation back pressure regulating valve back pressure regulator back pressure relief valve back pressure return back pressure sensor back pressure spring valve back pressure steam back pressure steam turbine back pressure test back pressure transducer back pressure trip back pressure trubine back pressure turbine back pressure turbine governing system back pressure turbine with intermediate bleed-off back pressure valve back priming back print back print method back printer back production back profile back project back projection back projection operation back projections back projector back prop back propagation back propagation algorithm back pull back pull wire drawing-machine back pullout back pulse back purge back purge system back putty back quote Back R. back rack back rack angle back radiation back radiator back radius back rail back rake back rake angle back range back ratch back reach back reaction back readig back reading back recovery back reed back reed clip for reed cap back reef back reflection back reflection X-ray camera back reflection x-ray examination back reinforced knife saw back reinfored knife saw back relation back release back rent back resistance back resistance meter back rest back rest bracket back right back rigidity back rind back ring back ripple current back rise back river back road back roads back rod back roll back roller back room back room boy back rooms back rope back router back roving traverse guide back row back row center back row hopper back rows back rub back rule back run back running back rush back sailing back salary back sand back saw back saw blade back saw with wooden handle back saws back sb up back scatter back scatter beta gauge back scatter constant back scattered electron detector back scattering back scattering coefficient back scattering correction back scattering factor back scheduling back scissors back score back scour back scraper back scratcher back screen back scrubber back scrubbing back sealing weld back seam back seat back seat driver back seat drivers back seat gasket back seat rail back seats back selling back set back setting back shaft back shaft scroll back shaper plate back sheet back shell back shield back shift back ship back shooting back shop back shore back shore terrace back shot back shots back shroud back shroud of impeller back shu points back shunt back shutter back shuttle guide back side back side grid bar back side guard back side loop back side strain back sight back sight angle back sight leaf back sight slide back signal back sinew back siphonage back sizing back slab back slagging back slang back slang it back slap back slash back slip back slope back slope (of cuesta) back slope(of cuesta) back sloper back slough back slums back solution back somebody up back someone up back somersault back something up back sonar back source back space back space file back space file on multifile tape back space key back spacing time back span back spattering back spectacle back spectacles back speed back spin back spin timer back splice back splicing back splint back splinting back spotfacing machine back spread back squad back square back stab back staff back stage back stage behavior back stagger back stair back stairs back stamp back stand back stand slide Back starboard give way port! back statement back stay back steam back steam chest head back step back step method back step sequence back step welding back sth up back stick back stitch back stitching back stoop falling back stop back stop motion back stope back stopes back stoping back stopper back stops back store back stories back story back straddle back straight back straights back strain back strain effect back strap back strap joint back strapped back streaming back street back streets back strength back stress back stretch back striking back stripe back stroke back strut back substitution back suction back support back surface back surface field back surface field and back surface reflection sol back surface field solar cell back surface reflection and back surface field sol back surface reflection solar cell back swamp back sweetening back swimmer back swimmer, backswimmer back swing back swing actuator back switch rod back switching back swivel sliver guide back tabulation back tail lever back talk back talks back tangent back taper back taper tap back tax back taxes back teeth back tell back temperature back tender back tendon back tension back tension bridle back tension drawing back test back texture back the anchor back the oars Back the oars! back the right horse back the sails back the wrong horse back then back three back thrust back thrusting back timber back time back timing back titrating back titration back to back to back back to back (test) back to back account back to back capacitor bank breaking current back to back connection back to back credit back to back credit export first back to back credit import first back to back duplex bearing back to back escrow Back to back FX agreement back to back L-C back to back l/c Back to Back LC back to back loan back to back repeater back to back sawtooth wave back to back tug back to back with back to basics back to earth back to face back to front back to home back to life back to me back to my roots back to nature back to normal back to our roots back to sail back to school back to square one back to the drawing board back to the future back to the land Back to the salt mine back to the salt mines back to the wall back to their roots back to work back to you back to your roots back to...again Back together Back together! back tone back tool rest back tooth back top roller back trace back trace technique back track back tracking back tracking algorithm back tracking method back tracking point back trail back transient back transient procedure back translation back translator back traverse back tube plate back tube sheet back turbine back turn back turn pulley back twisting back up back up area back up battery back up circuit back up copy back up data back up for back up in parsing back up item back up memory back up oscillator back up plate back up power back up procedure back up protection Back Up Ring Back Up Roll back up sand back up system back up tape Back Up The Truck back up value back up water level back up! back upon back value back valve back veneer back vent back view back view mirror back vision back voltage back vowel back vowels back walkover back wall back walls back ward impeller back ward leaning vane back ward roll back ward welding back ward-curved blade back wardation back warming back warp back wash back wash extractor back wash pump back wash valve back washer back washing back washing machine back water back water curve back water hammer back water load back water pump back water suppressor Back water! back waters back wave back way back wear back weave back weft back weight method back weld back welding back wheel back where you started back width back winding back window back window ledge back wire back wiring back wiring operation back woods wood back wool back work back work ratio back yard back yard garden back yard industry back yards back you up back(-)burner back(-)country back(-moving) spring back(ing) ring back(ward)ware back, loop back- back- translation back-ache back-acting hay tedder back-action back-action clasp back-action plugger back-alley back-alley abortion back-alleys back-along back-and-forth back-and-forth bending test back-and-forth method back-and-forth mode back-and-forthing back-and-forths back-and-to back-andforth back-angle back-angle counter back-annotate back-annotation back-arc back-arc area back-arc basin back-arc spreading back-arc subduction back-arcs back-assward back-asswards back-axle back-back back-back porch back-basket store Back-Bay back-beaming method back-bearer back-bearing back-bearings back-bench back-bencher back-benchers back-benches back-bend back-bends back-bent occlusion back-berend back-biased back-biased barrier back-biased resistance back-biased silicon diode back-bit back-bite back-bites back-biting back-bitings back-bitten back-blading back-blast back-blasts back-bleeding back-blowing steam back-board back-bombardment back-bond back-bonding back-bondings back-bone back-bone range back-boned back-bones back-boundary cell back-breaker back-breaking back-bred back-burn back-burner back-burnered back-burners back-busting back-by-back display back-bye work back-call back-cap back-cast back-catalogue back-catalogues back-chain back-chained reasoning back-channel back-channeled back-channeling back-channelled back-channelling back-channels back-chat back-chats back-check back-check cloth back-checker back-checking back-chipping back-cloth back-cloth star back-cloths back-coated mirror back-coating back-comb back-combed back-combing back-combings back-combs back-cone back-connected back-connected fuse back-contact transistor back-countries back-country back-coupled generator back-coupled Hall generator back-coupling back-coupling condition back-court back-courts back-cover back-crank pumping unit back-crawl back-cross back-crosses back-current principle back-current relay back-date back-dated back-dateds back-dating back-datings back-diagonal back-diffusion back-door back-door cold front back-door influence Back-door listing back-door man back-door method back-door selling back-doors back-double back-doubles back-down back-draft damper back-draw back-drop back-drops back-dynamometer back-echo reflection back-emf back-emf coefficient back-emission back-emission electron radiography back-end back-end computer back-end crop back-end data base system back-end DB processor back-end DB system structure back-end difference back-end ductwork back-end enforcement back-end load back-end loading back-end man back-end metallization back-end network back-end networking back-end of line back-end process back-end processor back-end program back-end service time back-end shield back-end sill back-end surfaces back-end system back-end transaction back-ends back-extension back-extract back-extractant back-extraction back-extrapolate back-face back-facet monitor back-fat thickness back-feed back-feed material back-feet back-fence back-fill back-fill tamper back-filled back-filled fabric back-filled finish back-filleds back-filling back-filling in layers back-filling machine back-filling tamper back-filling temper back-fills back-fin back-fire back-fire arrangement back-fire arrester back-fire check valve back-fire relief device back-fired back-firing back-fist back-fists back-flame boiler back-flap back-flap hinge back-flip back-flips back-flow back-flow velocity back-flush(ing) chromatography back-flushed waste disposal back-flushing back-flushing technique back-flushings back-fold back-folding back-foot back-form back-formation back-formation, back formation back-formations back-formed back-front back-furrow back-ganging back-garden back-gardens back-gate back-gate transconductance back-gates back-gauge back-gear back-geared back-geared upright drill press back-green back-grey back-ground back-grounds back-guard back-hacking back-hair back-hair parts back-half back-hand back-hand drainage back-hand welding back-handed back-handed compliment back-handed compliments back-handed turn back-handedly back-handedness back-hander back-handers back-handexd back-handing back-hands back-haul back-haul airlift back-hauling calculation back-head back-header back-heel back-hoe bucket back-hoe front end loader back-home back-house back-houses back-illuminated back-in back-inlet back-iron back-irons back-issue back-kick back-kitchen back-kitchens back-land back-lash back-lash eliminator back-lash play back-lash potential back-lash spring back-lash voltage back-leak back-left back-level release back-light scribing back-lighted back-lighted nameplate back-lighted plotting surface back-lighted shot back-lighting back-lighting reduction back-lightings back-line back-lines back-lining back-lit back-lit display back-load back-loaded back-log back-logged back-logs back-lot back-mark back-marker back-markers back-matter back-migration back-mix condition back-mix fluidized bed reactor back-mix-flow reactor back-mixing back-mounted back-moving spring back-mutate back-mutated back-mutating back-nine back-nines back-number back-numbers back-of-an-envelope back-of-beyond back-of-board wiring back-of-the-book back-of-the-envelope back-of-the-envelope calculation back-of-the-envelope, back-of-an-envelope back-of-the-yards Back-Off back-off angle back-off compensation back-off device back-off power back-off shooting back-off system back-office back-offices back-order back-ordered back-out back-pack back-pack camera back-packer back-packers back-packing back-packings back-packs back-paddle back-paddled back-paddling back-page back-pager back-pages back-pagest back-pain back-panel back-panel wiring Back-Paschen effect back-pass back-passes back-patting back-pay back-pedal back-pedaled back-pedaling back-pedalled back-pedalleds back-pedalling back-pedallings back-pedals back-piece back-pinched saw back-plane drivers back-planing back-plate back-plates back-pocket back-pockets back-pollinating back-porch back-porch effect back-porch tilt back-pressing method back-pressure back-pressure curve back-pressure manometer back-pressure operation back-pressure regulator back-pressure regultor back-pressure sensor back-pressure test back-pressure testing back-pressure valve back-pressure well testing back-pressure-relief port back-pressures back-printing back-projected back-projecteds back-projection back-projection reader back-projection slide back-projections back-propagation back-propagation algorithm back-propagation network back-racket back-rail back-rake back-raking back-reaction back-reef facies back-reference back-references back-reflection back-reflection focusing camera back-reflection photography back-reflection pinhole camera back-reflection x-ray examination back-resistance back-rest back-rests back-reversion back-ridge back-right back-rippings back-river back-road back-roads back-roll back-room back-room boys back-rooms back-rope back-row back-rows back-run back-run process back-scatter back-scatter gauging back-scatter ionospheric sounding back-scatter measurement system back-scatter peak back-scatter soil density gauge back-scattered current back-scattered dose back-scattered electron back-scattered electrons back-scattered radiation back-scattered radiation dose back-scatterer back-scattering back-scattering factor back-scattering gauge back-scattering image back-scattering of thick samples back-scattering thickness gage back-scratcher back-scratching back-scratchings back-seat back-seat driver back-seat drivers back-seat driving back-seated valve back-seats back-selling back-set back-set bed back-setting effect back-settler back-shadow back-shop back-shot back-shu point back-shunt keying back-shutter back-side back-side cooling method back-sides back-silting back-siphonage back-siphonages back-slab back-slabs back-slang back-slant back-slapper back-slappery back-slapping back-slappings back-slash back-slashes back-slope back-space control back-space statement back-spacing back-spaul(d) back-speir back-spin back-spin timer back-stab back-stabbed back-stabber back-stabbers back-stabbing back-stabbings back-stabby back-staff back-stage back-stair back-stair intrigue back-stairs back-steam back-step back-step marks back-step procedure back-step sequence back-step welding back-stepping back-stitch back-stone back-stop back-stopping cost back-stories back-story back-straight back-strain back-strap back-streaming back-streaming of pump fluid back-street back-streets back-strike print back-strike printer back-stripping back-stroke back-strokes back-substitution back-substitutions back-surface mirror back-sweeten back-sweetened back-sweetening back-sweetens back-swept back-swept vane back-swing back-swings back-sword back-talk back-talking back-taper back-tax theory back-taxes back-tensioned drawing Back-testing back-thrusting back-tilting back-titration back-titrations back-to back-to back credit back-to-back back-to-back angle back-to-back angles back-to-back arrangement back-to-back capacitor bank breaking current back-to-back circuit back-to-back commitment back-to-back connection back-to-back connection converters back-to-back converter station back-to-back converter substation back-to-back counter back-to-back coupling back-to-back credit back-to-back credit export first back-to-back credit import first back-to-back device back-to-back devices back-to-back diode back-to-back duplex bearing Back-to-back financing back-to-back funding back-to-back ionization chamber back-to-back L/C back-to-back letter of credit back-to-back loan Back-to-back Loans back-to-back method back-to-back mounting back-to-back repeater back-to-back running back-to-back sawtooth wave back-to-back starting back-to-back synchronous starting back-to-back test back-to-back testing back-to-back transaction back-to-back with back-to-back(ticket) back-to-back-to-back back-to-backs back-to-basic back-to-basics back-to-basics movement back-to-college back-to-front back-to-front ratio back-to-nature back-to-roots back-to-school back-to-school goods back-to-the-basics back-to-the-basket back-to-the-future back-to-the-land back-to-the-roots back-to-the-school movement back-to-the-wall back-to-wall back-to-work back-to-work movement back-to-work order back-toback back-track back-track algorithm back-tracked back-tracking back-trackings back-tracks back-trail back-translate back-translated back-translateds back-translates back-translating back-translation back-translations back-trough back-tunneling back-turn back-twist back-type life support system back-up back-up acquisition system back-up battery back-up bearing back-up belt back-up bit back-up block back-up breaker back-up capability back-up chock back-up circuit back-up circuit breaker back-up coat back-up coating slurry back-up control data set back-up copy back-up credit facility back-up data back-up data set back-up device back-up disk back-up diskette back-up distance back-up drum back-up facility Back-up facility. back-up file back-up frequency back-up funding back-up government credit facility back-up heel back-up interactive line Back-up Intercept Control back-up item back-up lamp back-up light back-up line back-up master file back-up memory back-up method back-up operation back-up overspeed governer back-up overspeed governor back-up path back-up photomap back-up post back-up power back-up process back-up programmer back-up protection back-up protection relaying back-up punch back-up reference station back-up register back-up relaying back-up ring back-up roll back-up roll arbor back-up roll bearing back-up roll sleeve back-up roller back-up safety device back-up sand back-up shaft back-up source back-up spring back-up storage back-up stores back-up strip back-up system back-up system library back-up tape back-up tong back-up transaction file back-up trunk back-up valve back-up washer back-up water level back-up withholding back-ups back-waist length back-wall cell back-ward back-wash back-water back-water at pier back-water height back-water in front of bridge back-water valve back-waters back-way back-ways Back-Wheel back-wind back-wired panel back-with back-yard back-yardism back-yards back. Bačka backa (bachka) backa palanka Bačka Palanka Bačka Petrovo Selo backa topola Bačka Topola backabbr. backable backache backache in pregnancy backaches backacter backacting shovel backaction backactions backactor backadation backage backaged fuel backake backal Backaland backalgia backals backand backarapper backarc backare Backaryd backassward backasswards backband backbands backbar backbarrow backbarrows backbeach backbeach(back shore) backbear backbeat backbeats backbench backbencher backbenchers backbenches backbend backbending backbends backbiased backbit backbite backbiter backbiters backbites backbiting backbiting transfer backbitingly backbitings backbits backbitten backblast backblast area backblasts backblock backblocker backblocks backblow backblowing backboard backboards backboiler backbond backbonding backbonding ligand backbonds backbone backbone aisle backbone bus backbone cabal backbone cabling backbone chain backbone curve backbone element backbone frame backbone hydrogen bond backbone motion Backbone Mountain backbone mt. backbone network backbone network service backbone of fiber optic networks backbone of network backbone of percolation cluster backbone projects backbone provider backbone ranges backbone ring backbone road backbone route backbone router backbone routing backbone site backbone structure backbone tray frame backbone type backbone wire model Backbone Wiring Backbone. backboned backboned animal backboneless backbones backbook authority backbore backbox backboxes backbreak backbreaker backbreakers backbreaking backbreakingly backbreakings backbrushing backbulge backburn backburned backburner backburnered backburners backburning backburns backcard backcards backcare backcast backcast simulation backcast stripping backcasted backcasting backcasting method backcasts backchain backchained backchaining backchains backchannel backchannelled backchannelling backchannels backchat backchats backchatted backchatting backcheck backchecked backchecking backchecks backcloth backcloth star backcloths backcoat backcoating backcolor backcomb backcombed backcombing backcombings backcombs backcopy process backcountries backcountry backcountry district backcountry.com backcoupled generator backcoupling backcourt backcourtman backcourts backcrawl backcross backcross breeding backcross hybrid backcross mating backcross method of breeding backcross parent backcross ratio backcrossed backcrosses backcrossing backcrossings backcycling backdate backdated backdates backdating backdeep backdigger backdoor backdoor data backdoor entry backdoor file backdoor file indicator backdoor financing backdoor listing backdoor man backdoor output backdoor selling Backdoor Slider backdoor spending backdoored backdooring backdoors backdown backdowns backdraft backdrafts backdraught backdraughts backdrift backdrop backdropped backdropping backdrops backe backease backeases Backebergia Bäckebo backed backed away backed bill backed blade backed bond backed by backed by gold backed cloth backed down backed for bail backed frictional material backed note backed off backed onto backed out backed porcelain backed stamper backed up backed up bit backed up type roller leveller backed weave backed-off cutter backed-off milling cutter backed-off tap backed-up backed-up auxiliary backed-up busbar backed-up power supply backed-up supply backed-up value backed-up water level backedge backedge of impulse Backefors Bäckefors backeless backen backend backend computer backend machine backend performance backendish backends backening backer backer pump Backer sodium process backer-just rate equation backer-up backerboard backergunge (bakarganj) backerin backerman backermore backermost backers backers-up backes backest backet backextract backey backface backfaces backfall backfaller backfalls backfash backfat backfat probe backfat thickness backfeed backfeed factor backfeed loop backfence backfield backfielder backfields backfile backfile conversion backfiles backfill backfill compaction backfill consolidation backfill density backfill grouting backfill material backfill of the site backfill rammer backfill tamper backfill with mortar backfilled backfiller backfilling backfilling bucket backfilling gang backfilling material backfilling thrower backfillings backfills backfin backfins backfire backfire antenna Backfire bomber backfire effect backfire effects backfire torch backfired backfires backfiring backfirings backfisch backfische backfisches backfish backfist backfists backfit backfitting backflap hinge backflash backflashes backflip backflipped backflipping backflips backflooding backflop backflow backflow cell model backflow channel backflow connection backflow damper backflow obstruction backflow preventer backflow ripple backflow valve backflow-prevention device backflowing backflowings backflows backflush backflush chromatogram backflush chromatography backflush device backflush valve backflushed backflushes backflushing backflushing chromatography backflushing technique backfolded backfolding backfoot backforecast backform backformation backformations backfreight backfriend backfriends backfurrow backgain backgame backgammon backgammon board backgammon boards backgammoned backgammoning backgammons backgarden backgardens backgate backgauge backgear backgear ratio backgear shaft backgeared backgearing backglass backglasses backgound document background background absorption background absorption correction background acquisition background activity background activity level background adaptation background air background air pollution background application background area background artist background assembler background authentication background border background brightness background buildup background bus background calibration background camera background charge background check background checking background checks background clutter background collimating mark background collimating point background color background color value background colour background colour control character background compiler background Compton scattering background computer background concentration background condensation background condition background conductivity background contamination background control background correction background count background counting background counting rate background counts background cross-section background current background data background data terminal background density background determination background diabetic retinopathy background discrimination background display image background document background doping background doping effect background doping level background dose background effect background effect source background electrolyte effect background emission background equivalent activity background equivalent activity (BEA) background exposure background extinction background factor background fade-in background film background fluctuation background fluctuations background fluorescence background fodder background fog background gactor background galaxy background generator background genotype background gradient spectrum background heater background heating background hump background hybridization background illuminance background illumination background image background images background impurity background indensity background information background information for audit background initiator background ink background inking background intensity background interference background interference procedure background internal friction background investigation background ion background ionization voltage background ionization votage background ions background irradiance background irradiation background Iuminescence background job background jot background knowledge background level background levels background light background light sensor background lighting background limited infrared detectivity background limited infrared detector background limited infrared photoconductor background limited photodetector background loop background loudspeaker background luminance background luminance meter background luminance sensor background luminescence background mass spectrum background material background measurement experiment background measurement radiometer background mix background mode background modulation noise background monitor background monitoring background monitoring station background music background neutron background noise background noise criteria background noise field strength background noise level background noise of channel background noise of wind tunnel background noise photon background noises background note background of cloth background of invention background of mark background of mass spectrum background of water environment background operation background or bias-include noise background paging background partition background photon fluctuations Background picture background plane background planting background plate background pollution background pollution observation background print spooler background printing Background Priority background process background process group background processes background processing background processing interrupt background processings background program background programming background projection background projector background radiation background radiation intensity background radiation level background radiation noise background radiations background radioactivity background random process background ratio background reaction background reader background reading background reflectance background reflection background region background register background rejection Background Repagination background research background response background return background returns background roller background scattering background scenery background scheduler background screen background selection background signal background signals background simulator background sound background sound effects background source background spectral radiance background spectrum background stain background staining background star background station background storage background stream background study background subtraction background suppression background survey background system background task background temperature background terminal background text background theories background tile background track background traffic background transmissivity background transmittance background trapping background value background value monitoring background value of soil element background value of soil elements background value survey background vapo(u)r pressure background vapor pressure background variable background vibration level background video background visibility background voltage noise background wave background-check background-corrected background-free background-limited infrared photoconductor background-limited infrared photography background-noise background-noise control background-noise level background-subtractor backgrounded backgrounder backgrounders backgrounding backgroundings backgrounds backgroung backguy Backhammar Bäckhammar backhand backhand attacking rally backhand backspin service backhand chop backhand corner backhand court backhand drainage backhand drive backhand drives backhand groundstroke grip backhand hit backhand lift backhand method backhand pass backhand rope backhand service backhand shot backhand shots backhand stopping backhand stroke backhand strokes backhand swing backhand technique backhand topspin service backhand volley backhand welding backhand-welding backhanded backhanded compliment backhanded compliments backhandedly backhandedness backhander backhanders backhanding backhands backhaul backhaul cable backhauled backhauling backhauls backhaus backhead backheader backheads backheating backheel backheeled backheeling backheels backhoe backhoe bucket backhoe dredger backhoe excavator backhoe loader Backhoe Loaders backhoe shovel backhoe tamping backhoe trenching machine backhoe type backhoed backhoeing backhoes backhouse backhouses Backhousia backhuizen backi breg Bački Breg Bački Brestovac Bački Gračac backi monostor Bački Monoštor backi petrovac Bački Petrovac backie backies backimixing backin backing backing a bill backing a warrant backing activities backing an anchor backing and filling backing and stopping trial backing angle backing assets backing away backing band backing bands backing bar backing bead backing belt backing block backing board backing box backing brick backing bur backing burr backing card backing case backing cloth backing coil backing condenser backing copy backing cough backing deal backing deals backing device backing diaphragm backing distance backing dog backing down backing eccentric rod backing fabric backing field backing film backing frame backing gas backing groove backing groove of weld backing light backing line backing log backing maneuvers backing material backing memory backing movement backing of drift direction backing of rafters backing of smoke backing of the wind backing of veneer backing of wall backing off backing onto backing out backing out punch backing pages backing paper backing pass backing pin backing plank backing plate backing point backing power backing pressure backing propeller test backing pulley backing pump backing ratio backing register backing ring backing roll backing roller backing rudder backing rudder ship backing run backing sand backing scarp backing screen backing sheet backing shell backing shunting backing side backing side trap backing signal backing space backing space technique backing stage backing storage backing storage, backing store backing store backing stores backing strap backing strip backing strip (light) backing support backing tape backing test backing texture backing track backing turbine backing up backing up of sewage backing up recordings backing vacuum backing vacuum pump backing vessel backing weld backing weld(ing) backing welding backing welding electrode backing wind backing windows backing yarn backing-bar backing-off backing-off angle backing-off attachment backing-off cone clutch backing-off cutting backing-off lathe backing-off lever backing-off rod backing-off wheel backing-out backing-out punch backing-ring backing-space technique backing-strip backing-up backing-up roll backing-up screw backing-ups backingoff backingout backings backingup backjoint backjoints backjump backjumping backkick backkick backlash backknee backkward backland backlands backlands,back lands backlap tricot backlash backlash adjusting screw backlash allowance backlash characteristics backlash circuit backlash compensation backlash current backlash effect backlash eliminator backlash error backlash nonlinearity backlash phenomena backlash spring backlash unit backlash valve backlash-free backlashed backlasher backlashers backlashes backlashing backlask backlayering backlbow backle backlead backleads backleak backleg backless backless costume backless dress backless vest backlet backletter backley backleys backlick backlift backlifts backlight backlighted backlighted transparency backlighting backlighting photography backlightings backlights backlimb backlimb thrust backline backlines backlings backlingual consonant backlining backlinings backlink backlinkages backlinked backlinking backlinks backlins backlins, backlings backlist backlisted backlisting backlists backlit backlit display backlite backload backloaded backloaded horn backloading backloadings backloads backlocking backlocking track circuit backlog backlog by buyer report backlog control backlog depreciation backlog document backlog of business backlog of cases backlog of orders backlog of unfilled orders backlog order backlog quantity backlog total backlogged backlogging backlogs backlot backlots backlund backlying backman Backman differential thermometer backman tower backmarker backmarkers backmarsh backmasked backmasking backmatter backmen backmigration backmix backmix reactor backmixing backmost backmounted backmutation backmutations Backnang backne backness backnesses BACKnet backnumber backnut backnuts backo backo gradiste backoes backoff backoff algorithm backoff error BackOffice backoffs backorder Backorder Costs backordered backordered quantity backordering backorders BackOrifice backout backout routine backout routines backouts backover backovers backpa backpack backpack journalist backpack nuke backpack parachute backpack pump backpack transmitter backpackable backpacked backpacker backpacker.com backpackers backpacking backpacking tent backpacking tents backpackings backpacks backpaddle backpaddled backpaddles backpaddling backpain backpains backpanel backpart moulding machine backpass backpasses backpat backpatch backpatched backpatches backpatching backpay backpayment backpayments backpays backpedal backpedaled backpedaler backpedalers backpedaling backpedalled backpedalling backpedals backpeddle backpeddled backpeddles backpeddling backpiece backpieces backpitch backpitch wheel backplan backplane backplane bus backplane connector backplane interconnect backplane level backplane placement backplane routing backplane testing backplane wiring backplanes backplastered backplastering backplate backplate assembly backplate circuit backplate modulation backplates backpointer backporch backporch current backport backported backporting backports backpressure backpressure extraction turbine backpressure governor backpressure manometer backpressure operation backpressure regulation backpressure regulator backpressure turbine backpressure valve backpressures Backpricing backprint backprinted backprinting backprints backproject backprojection backprojection operator backprojector backprop backpropagate backpropagated backpropagates backpropagating backpropagation backpropagation algorithm backpropagation training backpropagational backpropagations backpurge backquote backquoted backquotes backquoting backr backra Backrack backraking backras backreach backreact backreacted backreacting backreaction backreactions backreacts backread backreading backreads backreef backreef facies backreef lagoon backreef sediment backref backreference backreferenced backreferences backreferencing backreflection backrefs backrer backrest backrest angle backrest block backrest cushion backrest height backrest width backrests backribs backrinding backroad backroads backroads.com backroll backrolled backrolling backrolls backronym backronymic backronyms backronymy backroom backroom boy backroom boys backroom staff backroom stock backrooms backrope backross backround backround noise backrounds backrow backrower backrowers backrows backrub backrubs backrun backrun process backrush backs backs away backs down backs of beyond backs off backs onto backs out backs to the wall backs up backs-in backs-of-an-envelope backs-of-beyond backs-to backs-to-front backs-to-nature backs-to-school backs-to-the-wall backs-to-wall backs-to-work backsaver backsaw backsawing backsaws backscarp backscarps backscatter backscatter clutter backscatter coefficient backscatter cross section backscatter electron image backscatter factor backscatter ga(u)ge backscatter gage backscatter gauging backscatter geometry backscatter image backscatter laser Doppler velocimeter backscatter meter backscatter method backscatter peak backscatter percentage backscatter radar backscatter sounding backscatter spam backscatter ultraviolet radiometer backscatter ultraviolet technique backscatter visibility sensor backscatter-to-extinction ratio backscattered backscattered debris backscattered electron backscattered electron image backscattered light backscattered signal backscattered ultraviolet backscatterer backscatterer thick-ness backscatterer thickness backscattering backscattering analysis backscattering coefficient backscattering correction backscattering cross-section backscattering differential cross-section backscattering efficiency backscattering factor backscattering gage backscattering gauge backscattering lidar backscattering spectrometer backscattering spectrometry backscattering spectrometry (BS) backscattering thick-ness gauge backscattering thickness ga(u)ge backscattering thickness gage backscattering thickness gauge backscattering wave backscatterings backscatters backscene backscenes backscour backscratch backscratched backscratcher backscratchers backscratches backscratching backscreen backscreens backscroll backseat Backseat Browser backseat driver backseat drivers backseater backseaters backseats backseattered backselling backset backset bed backset bedding backset beds backset eddy backsets backsetting backsey backshadowing backshadowings backshaft backshank backsheesh backsheesh, backshish backsheeshed backsheeshes backsheeshing backsheet backshell backshells backshield backshift backshifted backshifting backshifts backshine backshish backshished backshishes backshishing backshock backshoot backshooter backshooters backshooting backshoots backshop backshore backshore beach backshore deposit backshore terrace backshore zone backshores backshot backshots backside backside angle backside attack backside bus backside cache backside cooling method backside edge backside illumination backside pattern backside thread backside throw backside throws backside-front backside-to backsides backsiding backsies backsight backsight method backsight method (orienting plane table) backsighted backsighting backsights backsiphon backsiphonage backsizing backslang backslap backslapped backslapper backslappers backslappes backslapping backslappings backslaps backslash backslash character backslash charcter backslashed backslashes backslashing backslid backslidden backslide backslided backslider backsliders backslides backslideth backsliding backslidings backslope backslope, back slope backslopes backsolution backsolutions backsolvable backsolve backsolved backsolves backsolving backsource backsourced backsources backsourcing backspace backspace character backspace character unit backspace characters backspace command backspace control backspace correction backspace file backspace key backspace keys backspace mechanism BACKSPACE statement backspace subroutine backspace tape backspaceable backspaced backspacer backspacers backspaces backspacing backspeir backspeir, backspeer backspikes backspill backspin backspin roll backspin rolls backspinning backspins backsplash backsplashes backsplice backsplit backsplits backspot flyingfish Backspread backspring backspun backstab backstabbed backstabber backstabbers backstabbing backstabbings backstabby backstabs backstaff backstaffs backstage backstage boss backstage deal backstage musical backstage pass backstage talks backstager backstagers backstages backstagest backstagger backstair backstair(s) backstair(s) influence backstair(s) minister backstairs backstairs intrigue Backstairs Pass. backstairs passage backstairss backstale backstall backstamp backstand backstay backstay cable backstay of the sun backstay stool backstays backsteam backstep backstep sequence backstep welding backstep welding sequence backstep-welding backstepped backstepping backsteps backster backstere backsters backstitch backstitched backstitches backstitching backstock backstocking backstocks backstone backstop backstop porter bar backstop technology backstop tone backstop tong backstop tongs backstopped backstopper backstopping backstops backstore backstores backstories backstory backstrain backstrap backstrap loom backstrap molasses backstrapped backstraps backstream backstreamed backstreaming backstreams backstreet backstreet abortion backstreet boy backstreet boys backstreet processing shops backstreets backstress backstresses backstretch backstretches backstrip backstripping backstroke backstroke flip turn backstroke turn indicator backstroked backstroker backstrokers backstrokes backstroking backstrom backstromite backstyle backsurface bombardment backsurge disc valve backsurge tool backswamp backswamp deposit backswamp depression backswamps backsweep backswept backswept wing backswept wing aircraft backswepts backswimmer backswimmers backswimming backswing backswing voltage backswings backsword backsword(s)man backsword(s)men backswording backswordman backswordmen backswords backtab backtack backtag backtagged backtagging backtags backtalk backtalked backtalking backtalks backtender backteriological warfare backtest backtested backtesting backthrusting backtick backticks backtitration backto backto-back backtrace backtrace technique backtraced backtraces backtracing backtrack backtrack algorithm backtrack cancel backtrack condition summary backtrack interval backtrack menu backtrack mode backtrack search backtrack summary backtracked backtracker backtrackers backtracking backtracking algorithm backtracking control strategy backtracking method backtracking operation backtracking organization backtracking point backtracking programming backtrackings backtracks backtrail backtrails backtranslation backtranslations backtrapping backtrapping of bubble-cap tray backtroll backtrolled backtroller backtrolling backup backup acquisition system backup aid backup air data sensor assembly backup air gap device backup aircraft backup anchor backup and recovery backup and restore backup arrangement backup ball backup battery backup bit backup breaker backup browser backup browsers backup bus control backup buzzer backup cache backup capability backup circuit backup circuit breaker backup circuit-breaker backup command backup communication processor backup computer backup control data set backup coolant system backup copy backup cycle backup dancer backup data backup data set backup device backup die backup disk backup diskette backup domain controller backup electronic control backup equipment backup facility backup file backup filer backup files backup fixed disk backup flange backup force backup frequency backup fuel backup fuse backup gap Backup generator backup governor backup heel backup interceptor control backup item backup job backup lamp backup light backup lights backup line backup lining brick backup log backup man backup media backup memory backup men backup method backup mode backup operation backup order backup overspeed governor backup path backup person id backup plan backup plate Backup Plus Backup power backup power indicator backup power supply backup procedure backup processor backup program backup programmer backup protection backup protection equipment backup pumpkin backup radar backup reactor shutdown capability backup reference station backup register backup relay backup relaying backup ring backup roll extractor backup rolls backup safety device backup safety system backup satellite backup server backup service backup set backup shutdown backup software backup source backup space flight crew backup station backup steam supply Backup Step-Up backup storage backup store backup strategy backup strip backup system backup system library backup systems backup tape backup tong backup trap backup trunk backup unit backup utilities backup utility backup vent valve backup version backup vocalist backup vocalists backup vocals backup volume backup volume clean-up process backup volume cleanup process backup window backup withholding backup, back-up backup-archive client backupable backups backus backus - naur form Backus Naur Form Backus normal form Backus-Naur form Backus-Naur formalism Backus-Naur forms Backus-Naur notation Backusella backusella circina backuss backveld backvelder backvelders backvelds backventing backview backviews backwall backwall photovoltaic cell backwall photovoltaic effect backward backward acting backward acting decoder backward acting regulator backward action backward adaptive prediction(apb) backward adaptive quantization(aqb) backward aerofoil blade backward analysis backward and bidirectional backward and forward backward and forward bending test backward and forward extrusion backward arch standing backward area backward areas backward association backward attribute backward backwash backward bend vane backward bending labor supply curve backward bending supply curve backward bent vane backward bias backward boost backward bound backward branch backward branch of diffraction curve backward branching backward brush lead backward brush-lead backward busy backward busy signal backward busying backward busying signal backward call indicator backward call indicators backward caries backward chained reasoning backward chaining backward chaining control backward chaining manner backward chaining problem solver backward channel backward channel ready backward child backward circle backward circle monut backward class backward classes backward combatability backward combustion backward compatibilities backward compatibility backward compatible backward compliment backward compliments backward condition backward conditional probabilities backward conditional probability backward conditioned reaction backward conditioning backward connection backward counter backward counting backward country backward creep backward cross talk backward crosstalk backward current backward curvature backward curve blade backward curved blade backward curved fan blade backward curved vane backward decay backward deduction system backward diagonal backward dictionary backward difference backward difference function backward difference method backward difference operator backward differentiation method backward differentition method backward diode backward dip backward direction backward dislocation backward dive backward drainage backward eccentric backward echo backward edge backward effect backward elimination backward elimination procedure backward equation backward equations backward erosion backward error backward error analysis backward error correction backward error recovery backward estimation backward euler backward explicit congestion notification backward extruding die backward extrusion backward extrusion die backward failure backward feed backward feeding backward field impedance backward field torque backward file backward file recovery backward finite difference backward flashover backward flight backward flow backward flow forming backward flow problem backward flow process backward folding backward forward counter backward gain backward gear backward glance backward going backward hand spring backward haulage backward heart failure backward heart-failure backward hold backward impedance backward in backward in coming forward Backward in management backward inclination backward inclined blade backward inclined type of impeller backward index backward index number backward indicator bit backward induction backward inductions backward inference backward integration backward interpolation backward interpolation formula backward ionospheric scatter backward jet backward jump backward LAN channel backward lead backward leaning blade backward leaning vane backward learning backward learning algorithm backward letter backward link backward link field backward link pointer backward linkage backward linkage coefficient backward linkage effect backward lobe backward looking backward lunge backward magnetic tape backward mapping backward masking backward motion backward motion vector backward movement backward moving average backward moving average representation backward one frame backward operator backward option backward parabolic equation backward pass backward path backward pawn backward pawns backward phase component backward photodiode backward pig backward pivot backward pointer backward polyphase sort backward position backward power backward prediction backward pressure backward probability backward process backward processing backward production system backward production system for robot problem solvi backward progression backward progression lap winding backward progression winding backward propagation ionospheric scatter backward pruning procedure backward pull backward radiation backward ray cone backward reachability backward reaction backward read backward reading backward reasoning backward recovery backward recovery time backward reference backward referencing backward region backward repositioning backward resistance backward resorption backward reversal backward robot problem solving system backward round-the-world echo backward rule backward running backward running torque converter backward scan technique backward scatter backward scatter propagation backward scatterance backward scattering backward scheduling Backward Search backward search for beginning of program backward search for block number backward search for particular data backward search for program alignment function backward season backward selection model backward sequence backward sequence number backward set backward set-up backward shift backward shift operator backward shifting backward ship backward sight backward signal backward signaling path backward signalling backward signalling path backward slash backward slip backward sloping supply curve backward somersault backward somersault with two twists backward spatial harmonic backward speed backward spinning backward spinning pressure backward spring backward stability backward stagger backward station method backward step backward steps backward stick action backward stitch backward stroke backward stroke of the piston backward substitution backward substitution technique backward supervision backward supervision path backward sweep backward swept vane backward swinging backward swinging gangway backward take backward tape wind backward tension backward test channel backward thrust backward tilt backward torque backward tracing backward transfer backward transfer admittance backward transfer characteristic backward transter character backward travel backward traveling wave backward type backward unloading elevator backward vane backward vertical integration backward vision backward voltage backward wave backward wave amplifier backward wave in traffic flow backward wave magnetron backward wave oscillation backward wave oscillator backward wave oscillator tube backward wave oscillator(carcinotron) backward wave oscillators backward wave parametric amplifier backward wave transmission backward wave tube backward wave tubes backward wavefront backward welding backward-acting decoder backward-acting regulator backward-action regulator backward-and-forward bending test backward-bending curves backward-bias backward-bladed aerodynamic fan backward-bladed impeller backward-compatible backward-curved blade fan backward-curved vane backward-curved-blade fan backward-difference backward-differnece formula backward-facing backward-facing seat backward-feed backward-field impedance backward-field torque backward-flow backward-forward counter backward-gear backward-inclined blade backward-looking backward-order reactance backward-rotating field backward-rotating wave backward-running backward-search algorithm backward-sloping letter backward-sloping supply curve backward-stroke backward-surging backward-tilting trough backward-transfer signal backward-wave backward-wave converter backward-wave crossed-field amplifier backward-wave magneteon backward-wave magnetron backward-wave oscillation backward-wave oscillator backward-wave oscillator(bwo) backward-wave parametric amplifier backward-wave power amplifier backward-wave tube backward-wave tube amplifier backward-wave tube oscillator backwardation backwardation contango backwardations backwarder backwardization backwardly backwardness backwardnesses backwards backwards and forwards backwards compatibility backwards compatible backwards compliment backwards learning backwards roll backwards rolls backwards-compatibility backwards-compatible backwardsness backwash backwash cascade backwash controller backwash effect backwash expansion backwash extractor backwash isotherm backwash limit backwash liquor backwash mark backwash marks backwash procedure backwash pump backwash rate backwash reflection backwash return pump backwash ripple mark backwash tank backwash valve backwash waste outlet backwash water backwash water connection backwash water gutter backwash-regeneration cycle backwashed backwasher backwashers backwashes backwashing backwashing filter backwashing rate backwashings backwasting backwater backwater area backwater curve backwater effect backwater effect of flood backwater end of backwater envelope curve backwater formula backwater from ice jam backwater function backwater gate backwater head backwater height in front of bridge backwater length backwater length of backwater level backwater limit backwater of reservoir backwater on backwater profile backwater pump Backwater Reservoir backwater silting backwater slope backwater space backwater storage backwater suppressor backwater trap backwater valve backwater zone backwatered backwatergate backwatering backwaterish backwaters backwave backway backways backwearing backweathering BackWeb backweight backweight method backweld Backwell backwind backwinded backwinder key backwinding backwinds backwood backwoodish backwoods backwoodsman backwoodsmen backwoodss backwoodsy backword backword wave amplifier tube backwords backwork backworm Backworth backwound backwounding backwrap backy backyard backyard cricket backyard poultry raising backyarder backyarders backyardism backyards