西南交大科技英語(yǔ)翻譯復(fù)習(xí)題解析

1、科技英語(yǔ)翻譯復(fù)習(xí)題1. Totransmitelectromagneticwavestakesenergy.傳送電磁波需要能量。2. Chemicalcontrolwilldomostofthingsinpestcontrol.化學(xué)防治能在病蟲害防治中起主要作用。3. Itisnotuntilwiresareconnectedthatthepathiscompleted.直到導(dǎo)線連上以后，此電路才連通。4. TheoddsareheavilyagainstanymanbeingabletodotheworkinthefieldofabstracttheorythatEinsteinisdoin

2、g.對(duì)任何能從事愛因斯坦正在進(jìn)行的抽象理論研究的人來說，條件都是極為不利的。5. Oscillatordesignisofanartratherthananexactscience.與其說振蕩器的設(shè)計(jì)是一門嚴(yán)謹(jǐn)?shù)目茖W(xué)，不如說它是一門藝術(shù)。6. Arapiddecreasebyafactorof7wasobserved.發(fā)現(xiàn)迅速減少到1/7。7. Birdsandanimalswhichhuntatnighthaveeyeswhichcontainfewornoconesatall,sotheycannotseecolors.凡是在夜間覓食的飛禽走獸，因?yàn)檠劬χ械囊曞F細(xì)胞數(shù)量極少或根本沒有，所以

3、不能辨別顏色。8. Tsunamiissometimespowerfulenoughtodestroyacoastwisebuildingitstrikes海嘯有時(shí)威力很大，足可催毀它所沖擊的沿岸的建筑物9. NoteverybodyisconvincedtheLeaningTowerofPisareallycanbesaved.并非每一個(gè)人都相信比薩斜塔真的能夠免于坍塌。10. Everycranehasacertainliftingcapacity,rangingfromafewtonstomanyhundredsoftones.每臺(tái)起重機(jī)均有一定的起重力，該起重力從幾噸到幾百噸不等。11

4、. Thebestsolutionistocontinuetoreduceallsourcesofpollutionaffectingouratmosphere最好的辦法是繼續(xù)減少影響大氣層的各種污染源。12. Quantumchemistryisstillinitsinfancy.量子化學(xué)仍處于發(fā)展初期。13. Itisthesedrawbackswhichneedtobeeliminatedandwhichhaveledtothesearchfornewprocesses.正是因?yàn)檫@些缺點(diǎn)需要加以消除，才導(dǎo)致了對(duì)新方法的探求。14. Real-timesystemsoftenneedext

5、raordinaryprecautionstoguardagainstpossiblebreakdownofthecomputer.實(shí)時(shí)系統(tǒng)往往要特別小心，以防止計(jì)算機(jī)發(fā)生故障。15. Thesteamengineusesafireinaboilerratherthaninsidetheengine.蒸汽機(jī)所利用的是鍋爐中的火，而不是發(fā)動(dòng)機(jī)里邊的火。16. Theprincipaladvantageoftheproductsisatwo-foldreductioninweight這些產(chǎn)品的主要有優(yōu)點(diǎn)重量減輕了1/217. Ourprimarypurposeinstudyingfatigueis

6、tounderstandwhyfailuresoccursothatwecanguardagainsttheminanoptimummanner.我們研究疲勞的目的在于了解產(chǎn)生失效的原因，以便能以最佳的方式加以預(yù)防。18. Thissystemwillbuildontheknowledgeandexperiencegainedindevelopingtheexistingsuiteofsoftwareproducts.這個(gè)系統(tǒng)的基礎(chǔ)是從開發(fā)現(xiàn)有的成套軟件產(chǎn)品中所獲取的知識(shí)和經(jīng)驗(yàn)。19. Allmetalsdonotconductelectricityequallywell并非所有的金屬導(dǎo)電性能

7、都同樣好。20. Itmeansthatthemassofthecometcannothaveamountedtoasmuchasoneten-thousandthofthatoftheearth.這表明這顆彗星的質(zhì)量甚至不到地球質(zhì)量的萬(wàn)分之一。21. Inspectionprogramshelptodeterminewhentoreplaceparts.檢驗(yàn)計(jì)劃有助于確定更換零部件的時(shí)間。22. Manyhealth-consciouswomenincreasetheirriskbyrejectingredmeat,whichcontainsthemosteasilyabsorbedform

8、ofiron.許多保健意識(shí)太強(qiáng)的婦女也很危險(xiǎn)，因?yàn)樗齻兙芙^食用牛肉或羊肉，而這些肉中所含鐵質(zhì)易被吸收。23. Theyconsideritnouseaddingmorecatalystsinthesolution.他們認(rèn)為在溶液里再加催化劑沒有用。24. Theentirecircuitshouldbecheckedagainsttheschematicdiagram應(yīng)該對(duì)照原理圖將整個(gè)線路檢查一次25. Thisissobecausetheresistancetomotionisessentiallyduetothedeformationoftherollingelementsandhenc

9、e,isnotaslidingphenomenon.所以這樣，是因?yàn)閷?duì)運(yùn)動(dòng)的阻力基本上源于滾動(dòng)零件的變形，而不是滑動(dòng)現(xiàn)象。26. Theequipmentreducedtheerrorprobabilitybyafactorof5.該設(shè)備誤差概率降低了4/5。27. Whatwecommonlycallmetalsareinfactofnotmetalsbutalloys我們通常稱作金屬的東西，實(shí)際并不是金屬而是合金28. AfewpeoplewereinfectedwiththeAIDSvirusthroughbloodtransfusions.曾有少數(shù)人通過輸血傳染上艾滋病毒。29. Th

10、eperformanceofthemachineisshortoftherequirements.這臺(tái)機(jī)器的性能沒有達(dá)到要求。30. Themajoradvantageofthetransistorasusedinelectroniccircuitsarelightweight,smallspace,lowpowerconsumption.使用在電子電路中的晶體管的主要優(yōu)點(diǎn)是重量輕，體積小，耗電量低。31. Thespecificmethodofcuttingshouldbeemployedtodecreasethegenerationofanundueamountofheat.應(yīng)采用特殊的切

11、割方法減少過多熱量的產(chǎn)生。32. Whilethisrestrictiononthesizeofthecircuitholds,thislawisvalid只要電路尺寸符合上述的限制，這條定律就能適用于該電路33. The“weightless”conditionofastronautsinorbitabouttheeartharisesfromjustthiscancellationofinertialandgravitationalforces.圍繞地球運(yùn)轉(zhuǎn)時(shí)宇航員的失重狀態(tài)，就是由于引力與慣性力相互抵消的原因。34. Itiswell-knownthatamovingelectrical

12、chargegeneratesacircularmagneticfieldarounditspath.眾所周知，運(yùn)動(dòng)中的電荷在其路途的周圍產(chǎn)生一個(gè)環(huán)形磁場(chǎng)。35thecalculationothevaluesinvolvessomanyfactorsthatonlyacomputercancopewithit這些數(shù)值的計(jì)算包括如此多的因子，以至于只有計(jì)算機(jī)才可以應(yīng)付。36. Whenthevoltageissteppedupbytentimes，thestrengthofthecurrentissteppeddownbytentimes.電壓升高9倍，電流強(qiáng)度便降低9/10。（?）37. Ho

13、wenergyandmatterbehave,howtheyinteractonewiththeother,andhowwecontrolthemmakeupthesubstanceoftwobasicphysicalsciences,physicsandchemistry.能量和物質(zhì)具有什么特性，它們?cè)鯓酉嗷プ饔靡约拔覀內(nèi)绾慰刂扑鼈?，這就構(gòu)成了物理和化學(xué)這兩門基礎(chǔ)學(xué)科的內(nèi)容。38. Foranymachinewhoseinputandoutputforcesareknown,itsmechanicaladvantagecanbecalculated.對(duì)任何機(jī)器來說，如果知其輸入力和輸出力，就

14、能求出其機(jī)械效益。39. Insuchcasesanantifrictionbearingmightbeapooranswer.這時(shí)如果用減摩軸承，可能不是一種好的解決辦法。40. Theamountofheatgivenoutbytheheaterincreaseindirectproportiontothelengthoftimetheheaterison加熱器所放出的熱量與加熱器開的時(shí)間愛你長(zhǎng)短成正比41. Whenoxygenwasblowninto,bacteriawerestimulatedtoeatthetoxicwastes.當(dāng)注入氧氣后，促進(jìn)細(xì)菌吞噬掉有毒的污物。42. Th

15、ebestsolutionthatscienceandmedicinehavecomeupwithsofaristhesleepingpill,whichisanothermixedblessing.迄今為止，科學(xué)和醫(yī)學(xué)對(duì)此提出的最佳解決方案是安眠藥片，但這也是既有利又有弊。43. Itfollowsthatradarisanelectronicsystemforlocatingaircraftorcloudpatterns.由此可見，雷達(dá)是用來測(cè)定飛機(jī)位置或云形位置的電子系統(tǒng)。44. Anentirediskpackmightholdaround300millionbytesorcharac

16、ters.一個(gè)整磁盤可能容納大約3億個(gè)信息組或電碼組合。45. Neverbeforehavesomanypeopleappliedsuchabstractmathematicstosogreatavarietyofproblems.從來沒有這么多的人，把如此抽象的數(shù)字用于解決種類如此繁多的問題。46. Thissortofmembraneistwicethinnerthanordinarypaper.這種薄膜比普通紙要薄一半。47. Electriccharges,positiveandnegative,whichareresponsibleforelectricalforce,canwip

17、eoneanotheroutanddisappear.產(chǎn)生電場(chǎng)力的正負(fù)電荷會(huì)相互抵消掉。48. Withouttheozonelayer，plantsandanimalswouldalsobeaffected如果沒有臭氧層，動(dòng)植物也將受到影響49. Withoutthelawsofmotionasabasis,thousandsofdiscoveriesandinventionswouldhavebeenoutofthequestion.沒有運(yùn)動(dòng)定律作為基礎(chǔ)，不可能有成千上萬(wàn)的發(fā)現(xiàn)和發(fā)明。50. ThespeciesthatliveonourEarthformitsnaturalenviron

18、ment,andintheirdiversitytheymaintainanintricatebalancewiththeEarthandwitheachother.生存在我們地球上的物種形成了它們的自然環(huán)境，它們以其多樣性保持著與地球和相互之間復(fù)雜的平衡性。51. Theimmunitysystemofahumanbodyisbeautifullydesignedtomeetmostofitsproblems.人體免疫系統(tǒng)十分精妙，足以應(yīng)付大部分疾病。52. Computerscomeinawidevarietyofsizesandcapabilities.計(jì)算機(jī)大小不一，能力各異。53.

19、ItisatonceapparentthatthecurrentflowsthroughT1andT2onahalfandhalfbasisinthiscircuitconfiguration.一目了然，在這種電路中，電流平均地流過了T1和T2。54. Thistypeofturbineusuallyrotatesataveryhighspeed,around20,000to25,000r/m.這種渦輪機(jī)通常以非常高的速度運(yùn)轉(zhuǎn)，每分鐘約為兩萬(wàn)到兩萬(wàn)五千轉(zhuǎn)。55. Asthemolecularweightsincrease,sodothemeltingandboilingpoints.隨著分子量

20、的增大，熔點(diǎn)和沸點(diǎn)也提高了。56. Switchingtimeofthenew-typetransistorisshortened3times新型晶體管的開關(guān)時(shí)間縮短了2/357. Thewiremustnotbeincontactwiththeairoritwillbecomeoxidizedandburnout.電線不能與空氣接觸，否則其會(huì)生銹并燒掉。58. Entireepochshavebeennamedformaterial.人們往往用某個(gè)材料來命名一個(gè)時(shí)代。59. Dynamicsisadisciplinethatcannotbemasteredwithoutextensivepr

21、actice60. Thiscurrentchanging，themagneticfieldwillchange.如果這一電流變化，磁場(chǎng)也會(huì)變化。61. Theycitedcasesofidenticaltwinsrearedindifferenthomeswhodevelopedverydifferentcharacteristicsdespiteidenticalheredity.他們列舉了一些這樣的事例，在不同的家庭撫養(yǎng)的一對(duì)雙胞胎盡管遺傳特性完全相同，但會(huì)養(yǎng)成完全不同的個(gè)性。62. Itgoeswithoutsayingthatagricultureengineeringinvolve

22、sboththenaturalsciencesandthebiologicalsciences.不言而喻，農(nóng)業(yè)工程包括自然科學(xué)和生物學(xué)。63. Thehigh-voltagetransmissionlinesofmostpowerarearrangedasnetworks.大多數(shù)高壓輸電線按網(wǎng)絡(luò)方式布局。64. Justastherateoftheflowofwatercanbemeasuredingallonspersecond,soistherateoftheflowofelectricitymeasuredinamperes安培用來計(jì)量電流的流量，就像加侖用來計(jì)量水的流量一樣。電流的流量

23、用安培來計(jì)算，正像水的流量能夠用每秒加侖來計(jì)量一樣65. Thehydrogenatomisnearly16timesaslightastheoxygenatom.氫原子的重量約為氧原子重量的16分之1.66. Theatmosphere,therefore,isheatedbycontactwiththesurfaceandverticalmotiontherebyensures.這樣，大氣由于與地面接觸而被加熱，從而引起了垂直對(duì)流。67. Problemshouldberesolvedingoodtime有問題要及時(shí)加以解決68. Theimportanceofproperlubricat

24、ioncannotbeoveremphasized.應(yīng)特別強(qiáng)調(diào)適當(dāng)進(jìn)行潤(rùn)滑的重要性。69. Aliquidismadetocirculatethroughpipesintherefrigerator,pickingupheatfromthefood.可以使某種溶液在冰箱的管子中環(huán)流，從而帶走事物中的熱量。70. TwospacecraftarebeinglaunchedtoprobetheatmosphereofVenus.將發(fā)射兩個(gè)航天器來探測(cè)金星的大氣層。71. Afterthewarmuchofthisknowledgewaspouredintothedevelopingofthecom

25、puters.戰(zhàn)后，這項(xiàng)知識(shí)大量的應(yīng)用于研制計(jì)算機(jī)。72. Ithasbeenfoundthatthecurrentmechanisminsemi-conductorsisentirelydifferentfromthatinmetalconductors人們發(fā)現(xiàn)，半導(dǎo)體的電流原理與金屬導(dǎo)體的電流原理完全一樣73. Wemaypictureanatomasmadeupofapositivenucleussurroundedbyelectrons.我們可以設(shè)想原子的結(jié)構(gòu)是一個(gè)帶正電荷的原子核外面圍著若干電子。74. Frictionalforces,too,mayalsoactwhenthere

26、isnorelativemotion.在沒有相對(duì)運(yùn)動(dòng)的情況下，也可以有摩擦力的作用。75. Theproductionofintegratedcircuitshasbeenincreasedtothreetimesascomparedwithlastyear集成電路的產(chǎn)量比去年增加了兩倍。76. Providingthatweknowboththecurrentandresistance,thevoltagecanbecalculated.知道了電流和電阻，就能求出電流。77. Matteristransportedinacirculatorysystem.循環(huán)系統(tǒng)輸送物質(zhì)。78. Littl

27、einformationisgivenastotheoriginoflife.關(guān)于生命起源方面的資料極少。79. Lubricatedfrequently,bearingswillwear.即使經(jīng)常給軸承潤(rùn)滑，還是會(huì)磨損。80. Twocables,thingmileslong,runundertheseafromEnglishtoFrance從英國(guó)到法國(guó)的海底，鋪設(shè)了兩條30英里長(zhǎng)的電纜。81. Indevelopingthedesign,wemustconsiderthefeasibilityofprocessing.在進(jìn)行設(shè)計(jì)時(shí)，必須考慮加工的可能性。82. Itisimportantt

28、olearnwhentheenvironmentisnotgoodforplantsandanimals;itisnotgoodforman.懂得當(dāng)環(huán)境不利于動(dòng)植物時(shí)也不利于人類這一點(diǎn)是很重要的。83. Theremightbeamassiveblackholeatthecenterofourgalaxyswallowingupstarsataveryrapidrate在銀河系中心也許有一個(gè)巨大的黑洞正以極小的速度吞噬星球。84. Toosmallspacingamongtheplantstandsiscausativeofthecropfailure.株距太小是農(nóng)作物歉收的原因。85. Th

29、eefficiencyofthemachineshasbeenmorethantrebledorquadrupled.這些機(jī)器的效率已提高了2倍或3倍多。86. Asfarasawholeisconcerned,thebodyiselectricallyneutral,whenthetotalnumberofprotonsequalsthetotalnumberofelectrons.當(dāng)質(zhì)子總數(shù)等于電子總數(shù)時(shí)，這個(gè)物體就整體而言是中性的。87. Aspecialfundhasbeensetuptohelpthesenationsusenewchemicalsandtechnology.已經(jīng)建立

30、特殊基金資助這些國(guó)家使用新的化學(xué)品和技術(shù)。88. Themotordidnotstopbecausetheelectricitywasoff電機(jī)停止逆轉(zhuǎn)，并非因?yàn)殡娫辞袛嗔?9. Knowingthestrength,itispossibletoworkbackwardanddeterminewhatfactorofsafetywasused.由于知道其強(qiáng)度，便可以反過來求出所用的安全系數(shù)值。90. Whenthewireshavebeenjoined,caremustbetakenthatwateranddampcannotgettothem.把線接好后，千萬(wàn)要注意，勿使接頭處粘水或受潮。9

31、1. Otherisolationmethodsarebeingdeveloped目前正在研究其他隔離方法。92. ItwasnotuntilMadamCuriediscoveredradiumthatpeoplehaveideaofwhatradioactivitywas.直到居里夫人發(fā)現(xiàn)鐳以后，人們才開始了解放射性。93. Byconventionanatomofanelementisrepresentedbyanabbreviationoftheelement'sname.按照慣例，一種元素的原子由該元素名稱的縮寫來表示。94. Thealloyistoocheapforusno

32、ttouseitwidelyinindustry.這種合金造價(jià)很低，我們可以把它廣泛應(yīng)用于工業(yè)上。95. Aprotonweighsalmost2,000timesasmuchasdoesanelectron.質(zhì)子的重量幾乎是電子重量的兩千倍。96. Engineeringwhilenotabasicscience,drawsheavilyuponthescientificdisciplineswhenitgoestoanypracticalfield雖然工程學(xué)不是一門基礎(chǔ)科學(xué)，但它應(yīng)用任何一個(gè)實(shí)際領(lǐng)域時(shí)都會(huì)大量使用在許多學(xué)科領(lǐng)域97. Nocasehaseverbeenfoundinwhic

33、hconservationofEnergydoesn'thold.尚未發(fā)現(xiàn)能量守恒定律不適用的情況。98. Undernocircumstancescanenergybecreatedordestroyed.在任何情況下，能量既不能創(chuàng)造，也不能消滅。99. Heated,waterwillchangetovapor水受熱后就會(huì)汽化。100. Inanycaseworkdoesnotincludetime,butpowerdoes在任何情況下，功都不包括時(shí)間，但功率包括時(shí)間。101. Beingsmallandlightmakestransistorsmoreadvantageousto

34、vacuumtubes.由于尺寸小，重量輕，晶體管優(yōu)于真空管。102. Earthquakemeasured6.5ontheRichterscale.這次地震震級(jí)為6.5里氏震級(jí)。103. Theyareregardedaselectronsmovingbackwardintime.它們被認(rèn)為是逆著時(shí)間而運(yùn)動(dòng)的負(fù)電子。104. Withthebatteryterminalsreversed,theresultisverydifferent如果將電池組的接頭反接，結(jié)果完全不同105. Lighttravelsattherateof300,000kilometerspersecond.光以每秒30

35、萬(wàn)千米的速度傳播.106. Theproductionofintegratedcircuitshasbeenincreasedtothreetimesascomparedwithlastyears.集成電路的產(chǎn)量比去年增加了兩倍。107. thelymphdoesnotcirculateastheblooddoes,soitsmovementdependslargelyonthesqueezingeffectofmusclecontractions.淋巴不能象血液那樣循環(huán)，其運(yùn)動(dòng)很大程度上依賴肌肉收縮的擠壓作用。108. Thevelocityoflightisasgreatasthatofr

36、adiowavesinvacuum.光的速度和無(wú)線電波在真空中的速度一樣快。109. Anelectriccurrentproducesamagneticfieldaroundit.電流在其周圍產(chǎn)生磁場(chǎng)。110. Thespeedofthefissionisdifficulttocontrol.裂變的速度難以控制。111. Compressorscanworkbythrowingoutdataunimportanttothequalityoftheimage.壓縮程序能刪除那些對(duì)圖像整體質(zhì)量無(wú)足輕重的數(shù)據(jù)。112. Wemustreflectwhattheinformationsystemsc

37、ommunityshouldbestrivingtoachieve這是信息系統(tǒng)界應(yīng)追求實(shí)現(xiàn)的東西113. Thisiswhattheinformationsystemscommunityshouldbestrivingtoachieve.這是信息系統(tǒng)界應(yīng)追求實(shí)現(xiàn)的東西。114. Copper,withitsextremelyhighcoefficientofexpansion,expandsmoreduringheatingthansteeldoes.由于銅的膨脹系數(shù)特別高，銅在加熱時(shí)比鋼膨脹得多。115. Thetemperatureinthefurnaceisnotalwaysabove1

38、000爐子內(nèi)的溫度并不是總是超過1000攝氏度。116. Theoutputofchemicalfertilizerhasbeenraisedfivetimesasagainst1986.化肥產(chǎn)量比1986年增加了4倍。117. Energyistheabilitytodowork,energyisalsostoredwork.能是做功的能力，能也是儲(chǔ)存的功。118. Theseatomsareseparatedbydistanceslargerthantheirdiameters.這些原子相隔距離的長(zhǎng)度超過了它們的直徑。119. Airisnotvisible,butitismatter.空

39、氣是看不見的，但空氣是物質(zhì)。120. Theimmunitysystemofahumanbodyisbeautifullydesignedtomeetofitsproblems人體免疫系統(tǒng)十分精妙，足以應(yīng)付大部分疾病121.ltisnotalwayspossibletodistinguishthem（noheritablevariations不遺傳變異）fromheritablevariationswithoutperforminganexperiment.不進(jìn)行試驗(yàn)要將其（不遺傳變異）與可遺傳變異分開來有時(shí)是不可能的。122. Amathematicalorlogicaloperationm

40、ustmeetacertaincondition.數(shù)學(xué)操作或邏輯操作必須符合某種條件。123. Ifthebearingwerenotlubricated,theywouldrapidlyoverheat.假如軸承未加潤(rùn)滑油的話，軸承很快就會(huì)過熱了。124. Withitsgreatpotential,thewideuseofopticalcommunicationswillnotcomeovernight.雖然光通訊有巨大的發(fā)展?jié)摿?，但它不?huì)在一夜之間就得到廣泛應(yīng)用。125. Thenumberofknownhydrocarbonsrunsintotensofthousands.已知的碳?xì)浠?/p>

41、合物多達(dá)幾萬(wàn)種。126. Arecordhighincreaseinvalueoffourtimeswasreported.據(jù)報(bào)道，價(jià)值破紀(jì)錄地增加了3倍。127. Ifthetemperatureriseshighenough,thechangeinthealloystructurewilltakeplace.若溫度升得很高，合金的結(jié)構(gòu)便會(huì)發(fā)生變化。128. Transistorsneedmuchhascurrent,andproductsmuchlessheat，themcomparableelectronicvalves與相應(yīng)的電子管相比，晶體管需要的電流小的多，所產(chǎn)生的熱也少得多129

42、. Theresistanceofaconductoralsodependsonthekindofsubstancethatitismadeof.導(dǎo)體的電阻也取決于導(dǎo)體的物質(zhì)的種類。130. Thebestwaytoachievethisisbyusingexistinginternetstandards.實(shí)現(xiàn)這一點(diǎn)的最有效的方式就是使用現(xiàn)存的因特網(wǎng)的語(yǔ)言標(biāo)準(zhǔn)。131. Futureapplicationsforsuchasystemincludeverifyingcreditcardsignaturesandautomatictellermachinetransactions這種系統(tǒng)未來的應(yīng)

43、用包括驗(yàn)證信用卡上的簽名和自動(dòng)出納機(jī)的業(yè)務(wù)。132.Interactiveprogrammingcondition（交互編程環(huán)境）arenowavailableforsomecommercialprogramminglanguage.交互編程環(huán)境現(xiàn)在能用于一些商用編程語(yǔ)言。133. Allwhohavestudiedthisquestionhavecometothesameconclusion.研究了這一問題的人都得出了同樣的結(jié)論。134. Ifthevacuumfails,itshouldbeconnectedwithoutdelay.如果真空破壞了，應(yīng)立即校正。135. Themeasur

44、esreducedthenormaldeath-ratetobelow2.5percent.這些措施使人口的正常死亡率下降到2.5%以下。136. Theefficiencyofthemachineshasbeenmorethattrebledorquadrupled這些機(jī)器的效率已提高了2倍或3倍多137. SomemedicalresearchesthinkthattheHIVvirusmaynotenoughbyitselftotriggerAIDS.有些研究人員認(rèn)為，HIV病毒本身也許并不足以引起艾滋病。138. Solidsexpandmuchlessthanliquidsorgas

45、es.固體的膨脹程度比液體和氣體小得多。139. Itisimportanttolearnwhentheenvironmentisnotgoodforplantsandanimals;itisnotgoodforman.懂得當(dāng)環(huán)境不利于動(dòng)植物時(shí)，也不利于人類這一點(diǎn)是很重要的。140. Usuallythereisnonecessitytofilterthisvoltagebeforeapplyingittotheload.這種電壓用于負(fù)載時(shí)不必先濾波。141. Excessadhesiveshallbecarefullyremovedtopreventrunningtoothersurface

46、s.擦去多余的粘接劑要十分小心，以免流到其他表面上。142. Thefrequencywithwhichthefiltershouldberemoved,inspectorandcleanedwillbedeterminedprimarilybyaircraftoperatingconditions.過濾器拆卸、檢查及清洗的次數(shù)，主要取決于飛機(jī)的運(yùn)行狀況。143. Toprotectheatfromescapingbyconvection,weusedalayerofairaboutaninchthick.我們使用1英寸厚的空氣層來防止對(duì)流引起的熱量散失。144. Anatomcanloseo

47、neormoreofitsouterelectronswithoutchangingitschemicalidentity一個(gè)原子可能失去其一個(gè)或數(shù)個(gè)外層電子而不改變其化學(xué)性能145. Theefficiencyofthebestofthesesteamlocomotivesisunder16percent.這些蒸汽機(jī)中，最佳者的效率不足16%。146. Withtheresultofautomationproductivityhasincreased6timesinthatfactory.自動(dòng)化的結(jié)果，那個(gè)工廠的生產(chǎn)率增加了5倍。147. Itmakesitselffeltinacircui

48、tonlywhenthereisachangingcurrent.只有當(dāng)電流發(fā)生變化時(shí)，它才會(huì)被人們察覺。148. Inliquidthemoleculesaremuchclosertogetherthantheyareingases.在液體中，分子之間的距離比在氣體中近很多。149. Muchworkhasbeendoneinorderthatdatacanbetransmittedbytelevision.人們已做了大量的工作，使情報(bào)資料可以通過電視來播送。150. Whenoxygenwasblowinto,bacteriawerestimulatedtoeatthetoxicwaste

49、s.當(dāng)注入氧氣后，促使細(xì)菌吞噬掉有害污物。151. Thepurposeofafoundationiscarryingtheloadofastructure.地基的作用是承受結(jié)構(gòu)的荷載。152. Packagedsoftwareisdevelopedtoservethespecificneedsofoneuser軟件包的開發(fā)只是為其一用戶的特定需要服務(wù)的153. Byconductivitywemeantheabilitytoconductanelectriccurrent.導(dǎo)電性就是指?jìng)鲗?dǎo)電流的能力。154. Withoutthetelescope,mechanicswouldhavetak

50、enaslowercourse.如果不是發(fā)明了望遠(yuǎn)鏡，力學(xué)的發(fā)展可能會(huì)遲緩一些。155. Theoxygencontentofairisabout21%.空氣中的氧氣的含量約為21%156. Themeltingpointofthismetalisgreaterthanthatofcopperbyapproximately2.5times157. Inflationcouldnotbecontrolled,butrathergotworseandworse.通貨膨脹沒有得到控制，反而越來越嚴(yán)重。158. Nowaday,moreandmoreplasticproductsareusedinpl

51、aceofmetal.現(xiàn)在，越來越多的塑料制品被用來代替金屬。159. Muchoftheheatinsidetheearthisproducedbyradioactiveelements.地球內(nèi)部的大部分熱是由放射性元素所產(chǎn)生的。160. Thespecificmethodofcuttingshouldbeemployedtodecreasethegenerationofanundueamountofheat應(yīng)采用特殊的切割方法減少過多熱量的產(chǎn)生161. WhattheTVcameradoesisbreakingthepictureupintoanumberoflinesconsisting

52、ofverysmallpointsoflight.攝像機(jī)的功能就是將圖像分解成許多由微小光點(diǎn)組成的線條。162. Noisesmaydevelopinawornengine.磨損了的引擎里可能會(huì)產(chǎn)生各種噪聲。163. Therearenoconstantsatall,andmeasurementsoftimeandspacedependonthepositionoftheobserver.theyarerelative.不存在什么恒量，時(shí)間和空間的測(cè)量結(jié)果取決于觀察者的位置。164. Thedensityoftheairvariesdirectlyaspressurewithtemperatu

53、reconstant當(dāng)溫度不變時(shí)，空氣的密度與壓力成正比165. Atthesametime,theinflatedmortalitydecreasedfromthe20%ofthe1960to10%ifthe1990.同時(shí)嬰兒死亡率從1960年的20%降到1990年的10%。166. Thelengthoftheprocesswasreducedtofourtimes.進(jìn)度縮短了1/4。167. Incaseofsmallcurrentmeasurementstheinsulatingmaterialsavailableareratherlimited.就小電流測(cè)量而言，可用的絕緣體材料的選

54、擇相當(dāng)有限。168. Theaccumulationofmoreandmoredetailsoftheprocessleadstoamoreandmoreaccurateexplanationofitsmechanism有關(guān)該過程的細(xì)節(jié)積累越來越多，對(duì)其機(jī)制的解釋就越來越精確169. Thereisarationalmathematicalapproachtoeverydesigndecision.每種設(shè)計(jì)決策都有一種合理的數(shù)學(xué)方法。170. Penicillinworksbynotallowingabacteriumtobuilditscellwall.青霉素的作用是不讓細(xì)菌制造細(xì)胞壁。17

55、1. Thefunctionofacapacitorisstoringelectricity.電容器的功能是儲(chǔ)存電。172. Shortsfrequentlydevelopwheninsulationiswork.絕緣被磨壞時(shí)往往會(huì)發(fā)生短路173. Amorecommonwayofjoiningthesemetalpiecestogetheristoweldthem.連接這種金屬件一般都采用焊接方法。174. Theconductivityofsemi-conductorsincreaseswithheatingandfalswithcooling.半導(dǎo)體的導(dǎo)電率隨溫度上升而增加，隨溫度下降而減少。175. Anincreaseintheoxygencontentofcoalby1%reducesthecalorificvaluebysome1.7%.煤的含氧量每增加1%，其熱值則下降約1.7%。176. Thewireistwotimesthinnerthanthat這跟導(dǎo)線比那根導(dǎo)線細(xì)2/3177. Perhapslightissomesortofelectricwave,whosenaturewedonotyetunderstand.也許，光是某種電波，其性質(zhì)我們尚不清楚。1