科技英語寫作高級教程參考答案

V、練習參考答案練習1I、1、the（各項均為負。)2、the;a（功率額定值是電阻器不會引起溫度太大的上升而能安全地耗散的最大功率。）3、an（這是均方根值伏特計。）4、The;a（該設備的成功設計需要詳細地了解性能指標。）5、the;a;a（在氫原子的布爾模型中，一個電子繞一個質(zhì)子以半徑為R的圓周運轉(zhuǎn)。）6、the（電阻的單位是歐姆。）7、an（這是一個h參數(shù)。）8、/;/（圖5－1畫出了Oersted的實驗。）9、A;a;a（機器是能夠傳遞力來完成某一確定目的的一種設備。）10、/（水壓機將在第14章加以考慮。）11、the;the[/]（我們?nèi)菀状_定參數(shù)μ的值。）12、/;the（根據(jù)式（2－1），我們得到以下的關系式。）13、the;/（作者工作在位于阿林頓的得克薩斯大學。）14、an（甚至當積分區(qū)間并不是無窮時，能夠恰當?shù)仫@示一個時函數(shù)的傅氏變換的儀器是多么重要?。。㊣I、Dr.EmmetgraduatedfromHarvardUniversityin2001.ProfessorLiearnedhisPh.D.degreeinmechanicalengineeringfromtheXi’anUniversityofTechnologyin1988.Nowweshallturntothediscussionoflocalareanetworks.TheBainbridgemassspectrometerisasimportantaninstrumentastheopticalspectrometer.Howlongatime[或Howmuchtime]isrequiredtothisexperiment?Anincreaseinpressurealwayscausesadecreaseinvolume.Fig.(2-5)showswhatisexpressedbyEq.(2-2).Theunitofinductanceisthehenry.III、TheUASMAprotocolemploysauniqueframestructure.Finally,abroadsteppedimpedancetransformerisdesignedbythismethod.DynamicanalysisandevaluationofthesecurityofaproactivesecretsharingsystemTheapproachcanbeappliedtotheone-dimensionalpotentialbarrierwithanarbitraryprofile.WeproposeanumericalmethodbasedonNewton’siterativemethod.練習2I、1.Thiscircuitconsistsofabattery,aninductorandacapacitor.2.Computetheelectricfieldsatpointsa,b,andc.3.ThissatelliteisusedforcommunicationsbetweentheUnitedStatesandGreatBritain,FranceandItaly.4.Weassumethattheantennaisverticalandthatitslossiszero.5.Chapters6,7,and8dealwithtransmissionlines.II、1.Itserrorissixpartsin1012.2.Thiscomputerstoresfourtimesmoreinformationthanthatone(does).3.Thedemandforthiskindofequipmentinthenearfuturewillbe20timeswhatitis.4.Thevoltageacrossthiscomponentisafewtenthsofavolt.5.Nowitsinternalpressureisonesixteenthwhatitwas.III、1.Thisobjectisoverfivetimesheavierthanthatoneis.2.Unlessotherwisestated,itisassumedthatsilicontransistorsareusedandthatICBOcanbeneglected.3.Thiscircuithastheadvantagesofsimplestructureandeasyadjustment.4.Figs.1,2,and3showthisprocessindetail.5.Forfurtherinformation,consultreferences[3,5,9].練習3I、1.Thisnewtypeofcomputerhasmanyadvantagesoverthegeneraltype.2.Itisnotdifficulttosolvethisdifferentialequationfortheunknownquantity.3.Ofthesefivenewchapters,thefirstonedealswiththebasicprinciplesofnegativefeedback.4.Atthispoint/time,currentdiffersinphasefromvoltageby90o.5.Byanalyzing[Bytheanalysisof]theparametersoftheinstrument,wecanunderstanditsperformance.6.Wewillfindoutitsaveragevelocityoverthisdistance.7.Thescienceofelectronicsistooimportantintheworldtoday.8.Theysolvedthisproblemwithgreatdifficulty.II、1.Forx＞1,thisequationholds..2.Upon[On]substituting[substitutionof]thesevaluesinto[in]theequation,weobtainedthefollowingexpression..3.ThiscircuitissimilarinoperationtothatofFig.1-10.4.Thiscomputerisverygoodinperformance.5.Thesewavestravelonlyinonedirection.III、1.Thispaperpresentsanewmethodfortherecognitionofradartargets.2.TheinfluenceofthemovingstateofthetargetonthetrackingaccuracyoftheEKFisgreat.3.Anothercomsatwaslaunchedonthemorningofthe8thofOctober.4.Voltageismeasuredinvolts.5.TheywillleaveforBeijingtoattendaninternationalconferenceonmobilecommunication.練習4I、1.Theforceactsperpendiculartothesurfaceofthetable.2.Thethreecoefficientshereremaintobedetermined.3.Thetwoequationsbelowwillbeoften(frequently)usedinlaterchapters/inthechapterswhichfollow.4.Hereweusetwometalballs10cmapart.5.Theoutputremains/staysconstant/unchanged/fixed/unaltered/thesame.6.Allthetextbooksavailablediscussthisproblem.7.Accurateinoperationandhighinspeed,computershavefoundwideapplications.8.Theanswertothisproblemlookscorrect.9.Twoparallelwiresadistance(of)δapartwillbeused.10.Theproblemnowishowtomeasurethevoltageacrossthiscomponent.11.Thesedatawillbesenttothecomputingcenter2kilometersaway.12.Uponrearrangingtheequationabove,weobtainthefollowingexpression.13.Thesechargescaninteractwithotherchargespresent.14.Forcescanbetransmittedwithoutcontact,contrarytothecommonbelief.15.Thiscoefficientistypically0.35（典型值為0.35）II、1.Inthiscase,theinputdoesnotfall;nor[neither]doestheoutput.[…;theoutputdoesnotfall,either.]2.Theresistanceofaconductordependsnotonlyonthematerialofwhichtheconductorismade,butalsoonthesizeandtemperatureoftheconductor.3.Thesescientistsareveryinterestedinthistopic.4.Thisparametercanhardlybemeasured.5.Inthislaboratory,thisinstrumentismoreexpensivethananyotherone/anyoneelse.6.Thefeaturesofthisdevicearesmallsizeandlightweight.練習5I、1.Thisequationcanbesolvedineitherofthefollowingtwoways。2.Thisbaseballwillsooncometorestbecauseofitsinteractionwiththeground.3.Ourchoiceofthiscoefficientas1iscorrect.4.Fromitsdefinitionastheratioofaforcetoalength,wecanseethatkhasthesameunitaswork(does).5.Ouranalysisofthemachineisofgreatsignificance.6.Thisfacilitatestheiruseincircuitanalysis.II、1.Thispolicecarisequippedwithareceiverthesizeofamatchbox.2.Wiresonehundredththediameterofasilkthreadareusedtoconnectthesecomponents.3.Wemustwatercooltheseequipments/devices.4.Inthepast,telephonecallswereoperatorconnected.5.ACcanbechanged/turned/converted/transformedinto/toDC,aprocesscalled/knownas/referredtoasrectification.6.Amagnetattractsironmaterials,afamiliarphenomenon.7.Computersarecapableofprocessinginformation,aprocessthatpreviouslycouldbeaccomplishedonlyinsideourheads.8.Aninstrumentformeasuringcurrent,voltage,andresistance,themultimeteriswidelyusedinelectricalengineering.III、1.Secs.1.1and1.2willdiscussseveralotherproblems.2.Problemsarelisted/givenonpp.1-5.3.Intheequationsabove,allh’sarethehybridparameters.4.Themassofthestandardpoundisequalto0.4535924277kilograms.5.Alla’sandb’sinEq.(5-1)arerelatedtotheimpedanceRo.6.Wemusttaketheeffectoftemperatureon[upon]semiconductorsintoaccount.7.Inthiscase,thevariationofoutputwithinputisverysmall.8.Thiscurveshowsthedependenceofdistanceon/uponspeed.IV、1.Noneofthemcansolvethisspecialtypeofdifferentialequation.這類特殊的微分方程2.Theydonotknowwhetherthismaterialcanstandsolargeaforceornot.3.共有M個多邊形，其每個頂點數(shù)均為NThereareMpolygonsaltogether,eachofwhichhasNvertexes.4.Thesetwoengineersarebusy(in)designinganewkindofsoftware.一種新的軟件5.Ironisalmostasgoodaconductorasaluminum.練習6I、1.Thisimage,itwillbenoticed,isarealimage.2.Thistechnicalproblem,wehope,willbesolvedsoon.3.210isapproximately1000,afactthatwethinkisveryusefulinthestudyofdigitalelectronics.4.Aresistorofsay100ohmsshouldbeusedhere.II、1.Noneofthosetextbookshave/hasmentionedthispoint.2.Allofthesexvaluescannotsatisfytheequation.3.Neitherofthetwoconditionsissatisfiedhere.4.Inthepreceding/previouschapter,wediscussedenergy.5.Thispaperdescribesanewmethodfordesigningaircraft.6.Bytheendofthelastcentury,thecompanyhadmanufactured5000radars.7.Since2008,thisresearchinstitutehasbeendevelopingaspecialkindofrobot.III、1.InSection1.2,theconceptofforcewasintroduced.2.Asearlyasthe1940s,itwasfoundthatsemiconductorsareveryuseful.人們發(fā)現(xiàn)3.Thisresultcanalsobearrivedatinanotherway.4.Atthattimenousewasmadeofthisphenomenon/…,thisphenomenonwasmadenouseof.5.Thispointwillbedealtwithinthenextsection.IV、1.Thiscomputerworksmuchbetterthanthatone(does)/Thiscomputerismuchbetterinperformancethanthatone(is)..2.Thiscomputerrequiresmanymorecomponentsthatthatone(does).3.Thedistanceofthemoonfromtheearthisasgreatas240000miles.4.Thegreatertheresistance,thelongertimeittakesforthecapacitortoreachitsmaximumvoltage.5.Thecurrentassmallas0.1Acannotproduceenoughheat.V、1.Itiseasyforustodeterminetheweightofthebody.2.Thetwoengineersarebusy(in)designinganewtypeofcomputer.3.Wefindthisconceptverydifficulttoexplain.4.Noneofthesewindowscanwithstandsolargeaforce.5.Workequals[isequalto]forcemultipliedby/timesdistance.6.Theresultsobtainedagreewiththeexperimentalvalues.[areinagreementwith]吻合練習7I、1.Itwilltakeafewmonthstodesignthiskindofaircraftwiththehelpofacomputer.2.Itisleftasaproblemto[for]thereadertoshowthatthisexpressionholds.3.Theprogramtobeexecutedisstoredinthisunit.4.Thisvalleyactsasthefoundationonwhichtobuildthedam.5.Inthislaboratorytherearemanykindsofinstrumentforstudentstochoosefrom.6.Lett0equal/beequaltozero.設t0等于零7.Thefartherawaythetarget(is),thelongertimeittakesfortheechotoreturn.8.Fortheseriestoconverge,xmustbelessthan1.為使該級數(shù)收斂9.Wefindthisconceptverydifficulttounderstand.10.Thismethodmakesitmucheasiertodetecttargets.11.Thisfactorwillaffecttheabilityofacomputertostoreinformation.計算機儲存信息的能力12.Wehavetofindouthowlargetomakersoasfortheseriestoconverge.使r為多大時才能使該級數(shù)收斂13.Thisisapentodrawpictureswith.14.Elasticityisthetendencyofabodytoreturntoitsoriginalconditionafterbeingdeformed.15.Ordinarymatterissaidtobeelectricallyneutral.16.Thispropertymakesitpossibleformetalstobemadeintoanyshape.17.Thistableisunfitforastudenttodoexperimentson.18.Nowweconsiderwhatpathofintegrationtotake.II、1.Thesinelawofthevariationoflightintensitywiththecylinderdiameterhasbeenemphasized.2.Notonlydotemperatureandlightaffecttheconductivity,buttheadditionofimpuritiestosemiconductorsalsomakesitchangegreatly.3.Varioussatellitesarefrequentlylaunchedtoobtaininformationabout/onspace.4.Oursemiconductorindustrycameintobeingattheendofthe1950s.5.MycolleaguesandIwouldliketoexpressourthankstoProfessorW.Smithforhisgreathelp.練習8I、1.Theamplifieramplifiesthereceivedsignals.2.Movingmoleculeshavekineticenergy.3.Speedequalsdistancedividedbytime.4.Voltageequals/isequaltocurrentmultipliedbyresistance.5.Theresistance(阻力)ofairincreaseswiththeincreased/increasingspeed.6.Atransformerisadeviceconsistingoftwoormorecoilswoundon/roundanironcore.7.Itisnecessarytofindoutthecurrentflowingthroughthiscomponent.8.Thisbook,properlyused,willbeofgreathelptothereader.9.Flowingthroughacircuit,thecurrentwilllosepartofitsenergy.10.Given/Knowingtimeandspeed,we/onecanfindoutdistance.11.Havingstudiedthischapter,thestudentwillunderstandtheprincipleofacomputer.12.Thespeedoflightbeingextremelygreat,wecannotmeasureitbyordinarymethods.13.Severalcomsatswerelaunched,allofthem(being)high-altitudesatellites.14.Called“themotherofallnetworks,”theInternetisawidelyusedinternationalnetwork.15.Thisforcecanberesolvedintotwocomponents,one(being)horizontalandtheothervertical.II、Letusconstruct/drawacirclewiththeoriginasthecenterandofradiusR.ThisparametershouldbemeasuredwithEgrounded.3.Withnoresistanceinthecircuit,thecurrentwillincreaseindefinitely.4.Withthisinview（由于考慮到這一點）,wehavewrittenthisbook.5.Thispaperintroducesanewdesignmethod,withemphasisonitsprinciple.III、Letusconsiderdesigningacomputer.Werefertothesecomponentsasbeingpassive.Thisinvolves（涉及）takingtheFouriertransform.On/Uponrearrangingtheaboveequations,weobtainthefollowingsetofequations.Inusingthisequation,itdoesnotmatterwhichplaneisconsideredas1.IV、1.Given/Knowingresistanceandcurrent,one/wecandetermine/calculatevoltage.2.Thepriceofthisinstrumentishigh.3.Arobotisaspecialkindofelectronicdevice.4.Thecurrentstartsflowingattheverymomentweclosethecircuit.5.Theyhavebeendesigninganewtypeofcomputerthesesixmonths.練習9I、1.Theproblemwasnotsolveduntilacompletelydifferentconceptwasintroduced.2.Nearly100yearspassedbeforetheexistenceofsubatomicparticleswasconfirmedbyexperiment.3.Theyearthisdevicewasinvented,WorldWarIIbrokeout.4.Smallastheyare,atomsaremadeupofstillsmallerparticles.5.Thesetworesistorsshouldbeselected/chosensothatthetransistorcanoperatenormally.6.Thebodyisinsuchastatethatitcandowork(做功).II、1.Therelationthatvoltageistheproductofcurrentandresistanceappliestoallthedccircuits.2.Thediscoverythatmagnetismcanproducecurrentisextremelyimportantinthefieldofelectricity（電學領域）.3.Anequationisanalgebraicstatementthattwoalgebraicexpressionsareequal.4.Thereisevidencethatnolifeexistsonthemoon.5.Thequestionnowariseswhetherthealgorithmisofpracticaluse.6.Inthiscasethereisnoguaranteethattheseriesisconvergent.7.Thereisagrowing/anincreasingawarenessthatthesetechniques/methodsareveryuseful.8.Oneofthemostnoteworthyachievementsatthattimewastherealizationthatlightconsistsofelectromagneticwaves.9.Thisisdueto/iscausedby/resultsfromthefactthattherearemanyfreeelectronsinconductors.10.Besides/Inadditiontothefactthatthepropertiesofthematerialshouldbeincludedintheanalyticalmodel,wemusttakeotherfactorsintoaccount.III、Thesefeaturesmakeitdifficultforelectroniccounter-measuresystemstointercept,analyzeandjamthiskindofsignal.2.Theexistenceofandtheabilitytocontrolthesephenomenamakethosedevicespossible.3.Thevariationof/inthenumberofthefilter’steethhasagreatereffectontheperformanceofitspassbandthanthevariationof/initsdimensions.4.Scalardetectionwillresultinthelossofsomephaseinformation.5.Fig.6showstheschematicdiagramofmeasuringscatterparametersbythenaturalparametertransformationmethod.練習10I、1.Nowitremainstobedeterminedwhentheseriesconverges.2.ItisclearfromDubamel’sTheoremthatthislimitexists.3.ItfollowsfromMaxwell’shypothesisthatwheneverthereisachangeinanelectricfield,amagneticfieldisproduced.4.Itdoesnotmatterwhetherthemagnetismovedinthiscase.5.Temperaturedeterminesinwhatdirectionthetransferofheatwilltakeplace.6.Itisnowawell-knownfactthatallmatterconsistsoftinyparticles.II、1.Whatagenerator(發(fā)電機)doesis(to)changemechanicalenergyintoelectricalenergy.2.Whatthischapterdescribes/Whatisdescribedinthischapterisofgreatimportance.3.Matteriswhatcanoccupyspace.4.Whatwehavediscoveredinthisexperimentistheentirelynewrealmofelectricalphenomenon.5.Thisdirectionisoppositetowhathasbeenassumed.6.Magnitude,direction,andplaceofapplicationarewhatwecallthethreeelementsofaforce.7.Thesenumbersconstitutewhatisknownastherealnumbersystem.8.Inwhatfollows,weshallacquaintourselveswithsomebasicconcepts.III、1.Anx-bandwave-guidetestsystemisshowninFig.7.2.Thismethodlowerstherequirementforthehardwareofasamplenetwork.3.Onthebasisoftheaboveanalysisofthedecompositionofthepolynomial,anovelconfigurationresults.[或：Theaboveanalysisofthedecompositionofthepolynomialresultsinanovelconfiguration.]4.Finally,ananalysisofpacketlossprobabilityismadebycomputersimulation.5.Thesparseratiooftheresultingimpedancematrixisashighas40%.練習11I、1.Themeter(that/which)weusetomeasurethevoltageacrossaresistoriscalledavoltmeter.2.Computersarethemostefficientassistants(that)manhaseverhad.3.Nowthisdiseaseisnolongertheseriousproblem(that)itoncewas.4.Radarcanmeasurethetime(that)ittakesfortheradioechotoreturn.5.Wemustcalculatethedistance(that/throughwhich)thebodyislifted.6.Thedirection(that/inwhich)abodymovesisalsoveryimportant.7.Thenumberoftimes(that/bywhich)thisparticlevibratesper/asecondiscalled/termed/named/knownas/spokenofas/referredtoasfrequency.8.Weequatethesetworatios,fromwhichthesimplestformulafollows/results.9.Itisnecessarytodeterminethetimewhen/thatthey-componenthasdecreasedtozero.10.Thecurvethey-coordinateofeachpointonwhichiszeroisjustthex-axis.II、1.Thepointatwhichthecirclecutstheaxisofrealsiswhereα=ω.2.Theforceofgravitymeanstheforcewithwhichtheearthattractsabody.3.Thesurfaceofapicturetubeuponwhichtheelectronsproducethepictureiscalledthescreen.4.Theauthorwouldliketoexpressthankstotheeditorsoftheseriestowhichthisbookbelongs/ofwhichthisbookisapart.5.Thisisaparallelogramofwhichthetwogivenvectorsare/formsides.6.Thepressureisequaltothetotalforcedividedbytheareaoverwhichitisexerted.7.Thetwoelementsofwhichwaterconsistsarehydrogenandoxygen.8.Thisdependsontheefficiencywithwhichelectronsareproduced.9.Thesetwolawsarethefoundationonwhichallotherlawsarebuilt.10.Thetemperatureatwhichwaterfreezesisgenerally0oC.III、1.Asthetitleindicates,thischapterwilldiscussnonlinearequations.2.Asthenameshows,afluidisasubstancewhichflowsreadily.3.Thissingleforceproducesthesameeffectasisproducedbythoseforcestogether.4.Nowweareabletosolvesuchdifferentialequationsasoccurinphysics.5.Thisfunctioncanbeaccomplishedbyusingthefulladderaswasdescribedintheprevioussection.6.Theseconceptsenableustounderstandawiderangeofphenomenainelectrostatics,or“staticelectricity,”asitiscalled.7.Thiscurrentis,aspredicted,verysmall,8.Firstletusconsiderthesimplestcircuitasshownonpage2.IV、1.Thisisaslightlyhighervaluethanwepredicted.2.Thisreactorcanproducemorefuelthanitconsumes.3.Letusconsiderthecasewhenthetorqueiszero.4.Wemustdeterminethevaluesofcurrentsandvoltagesaftertheswitchcloses.5.Duringthetenyearssincethisbookwasfirstpublished,significantchangeshavetakenplace/havebeenseeninmetal-making.V、1.Eveninthiscasetheseprotocolscanprovidealimitednumberofuserswiththeacceptablequalityofvoiceservice.2.Thispaperpresentsamethodforan8098microcontrollertoseries-communicatewitha386personalcomputer.3.Theeffectofequalizerparametersonequalizationperformanceisanalyzedindetail.[Adetailedanalysisismadeoftheeffectofequalizationparametersonequalizationperformance.]4.EachreceiverchannelinFig.1containsanRFamplifier,amixer,anIFamplifier,anA/Dconverter,etc.（注意：句尾的句號與縮略詞“etc.”的黑點重合在一起了）5.Thelargertheabnormalextent(is),thelargeristheresidualmismatch,withthecurvegoingup.練習12I、1.begrounded;2.becarried;3.beraised;4.be;5.nottry;6.be;besatisfied;7.be;8.be;was;have;10.wereconcentrated;11.hadbeen;12.weremoving;13.isgoingtorain;14.be;15.leakII、1.Shouldanythingabnormalhappen,switch/turnoffthepowersupplyatonce/immediately.2.Hadelectroniccomputersnotbeenused,itwouldhavetakenthemalongtimetosolvethisproblem.3.Itisveryimportantthatallsolutions(should)becheckedintheoriginalequation.4.Itissuggestedthatthisdesign(should)bemodifiedatonce.5.Withoutsemiconductors,satellitecommunicationswouldbeimpossible.6.WecouldalsohaveusedTheorem(6)toderivetheresult.7.Therequirementthatenergy(should)beconservedmustbesatisfied.8.Everythinghere,beitacomponentoradevice,ishome-made.III、1.Itwasthisscientistwho/thatdiscoveredthisphenomenonacenturyago.2.Tungstenistheverymetalusedinelectriclamps.3.Thespeedwithwhichsoundwavesmovethroughamediumdoesdependonthepropertiesofthemedium.4.Itisnotclearyetunderwhatconditionsitisthatthisformulacanbeused.5.Thispropertywecallinertia.IV、1.Theauthorisengagedintheteachingofandtheresearchoncomputervision,andimageprocessingandrecognition.2.LetPandQbetwoBooleanpermutationsofthesameorder,andthentheircompositionisanewBooleanpermutation.3.Threealgorithmsarepresented,whichcanremarkablyreducethetimetoraisethepen,thusraisingthedrawingefficiency.4.Whatthispaperdescribesisofgreatinteresttocommunicationsengineers.5.TheminimumentropytechniqueforestimatingtheDopplerfrequencyrateispresented,whichhastheadvantagesovertheclassicaltechniquesofhighaccuracyandasmallamountofcomputation.練習13II、1.Byelectromagneticforceismeantthepotentialdifferenceacrossthebatterywhenthereisnoflowofcurrent.2.Inthetablebelow/whichfollowsarelistedvariousparametersoffamiliarcomputers.3.Anelementcannotbedecomposed,norcanitbebrokenupbychemicalmethods.