《汽车英语》课件-Unit 5 产品检验

Unit5ProductInspectionHotTipUnit5ProductInspectionWriting4Presentation1Passage12Passage23LanguageLab7Extension7Speaking5Translating6HotTipUnit5ProductInspectionPresentationInanyindustry,qualityinspectionisaprocessthat'susedtoinsurethataproductisfreefrombugs,operationalissuesandanynumberofotherproblemsyoucanthinkof.Inautomanufacturing,thatmeanscarsgothroughrigoroustestingtomakesurethey'rewell-engineered,safeandcomfortable.Whenacarcompanyreleasesanewproduct,theybuildprototypes,whicharethentestedtofindweaknesses,mechanicalproblemsandotherdetailsthatcouldbeimproved.Oncetheprototypeshavebeenvettedandpolished,thedesigngoesintoproduction,wherequalitycontrolcontinuesontheproductionline,too.Afterbeingbuilt,eachcaristestedforproblemslikefluidandairleaks,mechanicalproblemsandproperassembly.HotTipUnit5ProductInspectionAutomotiveDiagnosticandTestProcedureDuringthelastdecade,advancesintechnologyhavemadetoday’svehiclesquiteadvancedmachines.Inthepast,vehicleswerediagnosedusingafairlystraightforwardcause-and-effectprocedure.Eachsystemwastreatedasaseparate,independentsystemisolatedfromtheothers.Anengine-relatedproblem,forexample,wasusuallyconfinedtojusttheengine,whiletransmission-relatedproblemswereconfinedtothetransmission,andsoon.Inthecaseofavehiclewithblacksmokespewingfromthetailpipe,thefocuswasonthefueldeliverysystem(fuelpump,carburetor,etc.).Amisfirewasusuallyassociatedwiththeignitionsystemwithitsrespectivecomponents.Althoughstillsomewhatapplicabletotoday’ssystems,thereisamajordifferenceinhowthetechnicianmustapproachtheproblem.翻译Passage1HotTipUnit5ProductInspection

Mostvehiclesarenowmanagedbyoneormorecomputersthatintegratetheoperationofseveralsystemstogether.Genericallyspeaking,thepowertraincontrolmodule(PCM)inmanyvehiclescontrolstheignition,fuel,andemissionsystem;engineandtransmission;brakesandtractioncontrol;andentertainmentandclimatecontrols.Whilethesesystemsstilloperateindependently,theyarealsointerrelatedtoothersystemsviathecomputer.Thetechnicianmustdetermineearlyinthediagnosticprocesswhatsystemcouldbeaffectinganotherseemingly-unrelatedsystem.Today’selectronicallycontrolledvehiclesappeartobeverycomplex,butitcanbelookedatinrelativelysimple,easytounderstandsegments.Itiscriticalthetechnicianunderstandthebasictheoryandoperatingprinciplesofthesystemsinthevehicle–mechanicalorelectrical.Indoingso,theinsightsforaccuratediagnosisareformed.Regardlessofthesymptom,concern,orsystem,aspecificguidelineforauniformdiagnosticproceduremustbeestablished.Althoughfindingtheprobleminareasonabletime-frameisimportant,theaccuracyofthediagnosisismoreimportant.Astheskilllevelandexperienceofthetechnicianimprovesovertime,sowillthespeedatwhichproblemsarediagnosed.Techniciansshouldpracticethe“fix-it-right-the-first-time”concept,thuseliminatingafrustratedcustomerreturningrepeatedlyforthesameproblem.翻译Passage1Unit5ProductInspection翻译Thediagnosticprocedurehasevolvedandisnowaresultofacriticalthoughtprocess,insteadofamechanicalprocess.Inotherwords,ratherthanassumingaspecificcomponentisfaulty,thenreplacingit,thediagnosticthoughtprocessproveswhyyouarereplacingitbasedonfactualtestresults.Usingasymptomtoestablishadiagnosisisimportant;however,actingonthesymptomalonewithoutperformingqualifyingtestscanleadyoudownacostlyandincorrectpath.Assumptionsmustbeprovedout.“Magicquick-fixes”donotalwayswork.Certainstepsneedtobefollowedwhenaddressinganyproblemwiththevehicle.Thefollowingsystematicapproachforaneffectivediagnosisgivesthetechnicianastrategyandprocesstofollowthatputsthingsinorder.Itcanapplytojustaboutanythingrelatedtothevehiclefromfluidleakstodrivabilityproblems.Passage1HotTipUnit5ProductInspection(1)QuestionsandAnswers.Thisisthetimethatthecustomerwillcommunicatethesymptomthathasledtothevehiclebeingbroughttoyou.Usually,aspecificeventoccurredthatappearedoutoftheordinarytothecustomer.Howthecustomertellsyouoftheproblemmayrequireyoutobeabitofaninterrogatorandadetective.Duringyourquestioning,youmayrevealanimportantpieceofinformationthatmaynothaveoccurredtothecustomertotellyou.Evenminorinformationcanbevaluable.Also,refrainfromlettingthecustomerdiagnosetheproblemforyou.Theyarenotalwayscorrect,ortheycouldbemakinganassumptionbasedonpartialexperienceorfacts.Useaworksheettoremindyouofthespecificquestionsyouneedtoask.翻译Passage1HotTipUnit5ProductInspection(2)ClarifytheComplaint.Repeattothecustomerwhatyouunderstandofthecomplaint.Usespecificexplanationsinthedialogandavoidusingtechnicaljargonthatmayconfusethecustomer.Althoughmanytermsarecommonlyusedthroughoutourindustry,fewcustomersactuallyunderstandtheirtruemeaning.Forexample,acustomermayrequestanalignmentbecausetheyknowithassomethingtodowiththewheelsandsteering,butwhatifthecustomeraskedforanalignmentbecausethecarvibratedatspeedsover40mph?Obviously,analignmentwouldnothelpthissituation.Imaginethemultitudeofdescriptorsthatcouldbeusedtoexplainengineordrivability-relatedproblems,oranythingelseconcerningthevehicle.翻译Passage1HotTipUnit5ProductInspection(3)VerifytheComplain.Thisstepisnothingmorethanconfirmingwhatfactis.Thisverifiesthattheproblemexistsandmatchesthedescription.Itmayrequireatestdrive,perhapswiththecustomer,toduplicatethesymptom.Itmaybenecessarytoattempttoduplicatetheconditionsasexperiencedbythecustomerwhentheproblemoccurred.Ofcourse,dependingonthesituation,thevehiclemayhavetobeleftforaperiodoftimeinordertorecreatetheconditionandproblem,perhapsevenovernight.翻译Passage1HotTipUnit5ProductInspection(4)Climate,Speed,Time,Distance,andAction.Thesefivecategoriescanfurtheraidyourdiagnosisbyunderstandingexactlywhatwashappeningatthetimetheproblemoccurred.Ifnecessary,askspecificquestionsabouttheclimate.Wasitahotorcoldday?Wasitraining?Askaboutthevehiclespeed.Wasthevehicleatidle,city,orcruisespeed?Next,findoutwhenithappened.Didtheproblemoccuratthefirststartofthedayorafterahot-soakperiod?Howoftendidithappen?Howfardidthecustomerdrivethevehicle?Didtheproblembeginjustoutofthedrivewayorafteralongdistance?Whatactionwasthevehicleperformingduringtheproblem?Wasthevehiclestopped,accelerating,turning,goinguphill,pullingaload,etc.?Also,ifapplicable,findoutifanyaftermarketequipmentoraccessoriesareinstalledorifotherservicehasbeendonerecently.翻译Passage1HotTipUnit5ProductInspection(5)UtilizetheResourcesthatAreAvailabletoYou.Wheneverpossible,youshoulduseallavailableinformationandotherresourcestoeffectivelydiagnosetheproblem,theleastofwhichisyourownexperience.Consulttheservicemanualoraserviceinformationsystemtoknowhowtoapplyspecificteststothevehicle.Insomecases,itwillbebeneficialtoresearchanytechnicalservicebulletins(TSBs)thatmayapplytothevehicle.Also,assimpleasitmaysound,donotoverlooktheowner’smanualthatcamewiththevehicle.Otherresourceswillincludepropertoolsandspecifictestequipmentneededtoperformtestsandrepairs.Asyouworkintoamorecomplextestprocedure,itisbesttofollowtherecommendedtestprocedureforthatparticularvehicle,whichonoccasionmayrequirespecialtytoolsofsometype.Donothesitatetoaskforassistance.翻译Passage1HotTipUnit5ProductInspection(6)BeginwithanAreaTest.Theareatestgivesyouthebroadestandquickestoverviewandassessmentofthesystemsinquestion.Youmaychooseatestthatwasbasedonasymptomorasuspectedfault.Thisgivesyouthemostgeneralofstartingpoints.Thepurposeistoisolateonesystemfromanother.Forexample,inthecaseofano-startcomplaint,youneedtodetermineiftheproblemismechanical,electrical，ignition,orfuelrelated.Byperforminganareatest,youwilldeterminethesystemsthatareworkingandthosethatarenot.Therefore,throughaneliminationprocess,youcanbegintofocusonthespecificsystemthatismostlikelytocausethecomplaintorsymptom.Theobjectiveistoexcludeallothercomponentsthathavenothingtodowiththeproblemanddeterminetherootcause.翻译Passage1HotTipUnit5ProductInspection(7)Next,PerformtheSystemTest.Nowthatyouknowwhatisandisnotworking,yourattentionwillfocusonthesystemthatisinitiallydeterminedtobeatfault.Thisisbecauseyoutestedtheothersystemswithnoproblemsfoundduringtheareatest.Thesystemyouwillbetestingisprobablymadeupofseveralcomponentsorsubsystems.Inthecaseofanignitionsystemproblem,youwillneedtoperformafewteststodeterminewhichpartoftheignitionsystemisnotfunctioning.Forexample,istheproblemintheprimaryorsecondaryignition?Asanotherexample,supposeourdiscussionwasrelatedtothemechanicalconditionoftheengine.Ifanareatestrevealedlowenginevacuum,thesystemtestmayincludeacompressiontesttodetermineifaninternalorexternalproblemexists.翻译Passage1HotTipUnit5ProductInspection(8)PinpointorComponentTest.Afterdeterminingthesystemfault,thisdiagnosticstepwillgetyoutotheendresult,orveryclosetoit.Withtheproblemisolatedtoagivensystem,thepinpointtestdeterminesthecomponentthatismostlikelythereasonforthefailure.Itisnothingmorethancontinuingtheeliminationprocess.Dependingonthesituation,sometestsaredonewiththecomponentinstalledinthevehicle,whileothersneedtobetestedindependently,withthecomponentremovedfromthevehicle.Thesetestsmaybeassimpleasavisualinspectionofacomponentafterdisassembly,aprecisemeasurementofapart,oradynamictestwithatestinstrument.Thistestingprocesshelpstovalidatetheperformancepotentialoftheunitorpartinquestion.Asyoucansee,thesituationswillvary,buttheconceptandprocessisthesame,regardlessoftheproblem.翻译Passage1HotTipUnit5ProductInspection(9)ApprovalandRepair.Afterdeterminingtheproblem,advisethecustomerofthecostandgetapprovalforthecompletionoftherepair.Explainwhatisneededandwhy.Ascomplexasthesystemsare,itispossibletouncoverotheritemsthatneedtobeaddressedbefore,during,oraftertherepairoftheoriginalproblem.Besureyoucommunicatethistothecustomeraheadoftime.翻译Passage1HotTipUnit5ProductInspection(10)ConfirmandRetest.Makeitamandatorypracticetoconfirmyourrepairs.Provetherepairyoumadesolvedtheproblem.Therepairsyoumakeshouldrestorethevehicletodesignedperformancelevels.Ifothermaintenanceisrequiredtopreventarepeatofthefailure,itisbesttodoitbeforereturningthevehicletothecustomer.Theaboveprocedurehelpsestablishconsistencyinthewayyoubeginthediagnosisandhowyoucommunicatewiththecustomer.Evenifyouarenotindirectcontactwiththecustomer,youneedtobeinvolvedwiththeservicewritertoimpairclearinformationtothecustomer.翻译Passage1HotTipUnit5ProductInspectiondiagnostic[,daiəɡ'nɔstik] adj.诊断的；特征的transmission[trænz'miʃən] n.传动装置，[机]变速器spew[spju:] vt.喷出；呕吐tailpipe['teilpaip] n.排气管carburetor[[,kɑ:bju'retə] n.汽化器；化油器integrate['intiɡreit]vt.使…完整；使…成整体adj.整合的；完全的ignition[iɡ'niʃən] n.点火，点燃mechanical[mi'kænikəl] adj.机械的；力学的；呆板的symptom['simptəm] n.症状；征兆drivability[,draivə'biləti] n.驾驶性能；assumption[ə'sʌmpʃən] n.假定；设想alignment[ə'lainmənt] n.队列，成直线；校准verify['verifai] vt.核实；查证validate['vælideit] vt.证实，验证；确认impair[im'pεə] vt.损害；削弱；减少NewwordsPassage1HotTipUnit5ProductInspectionconfinedto 局限于，只限于fueldeliverysystem 供油系统fuelpump 燃油泵ignitionsystem 点火系统powertraincontrolmodule 动力控制模块emissionsystem 排气系统tractioncontrol 传动系统，牵引力控制系统electronicallycontrolledvehicles电子控制汽车regardlessof 不管，不顾outoftheordinary 异常的，不寻常的，例外的technicaljargon 专业术语aftermarketequipment 售后零件市场servicemanual 维修手册technicalservicebulletins(TSB) 技术维修期刊owner’smanual 用户手册areatest 局部测试ignitionsystem 点火系统compressiontest 抗压试验；耐压缩试验pinpointtest 精确定位检测PhrasesandExpressionsPassage1HotTipUnit5ProductInspection1.Mostvehiclesarenowmanagedbyoneormorecomputersthatintegratetheoperationofseveralsystemstogether.现在，大多数汽车都是被一个或多个微控制器所控制的，这些微控制器对车辆的几个系统实行统一管理。2.Usingasymptomtoestablishadiagnosisisimportant;however,actingonthesymptomalonewithoutperformingqualifyingtestscanleadyoudownacostlyandincorrectpath.根据出现故障的症状进行诊断固然重要，但不进行测试验证，而仅仅根据症状进行诊断，会导致高昂的维修成本和错误的解决方法。NotesPassage1HotTipUnit5ProductInspection3.Forexample,acustomermayrequestanalignmentbecausetheyknowithassomethingtodowiththewheelsandsteering,butwhatifthecustomeraskedforanalignmentbecausethecarvibratedatspeedsover40mph?例如，顾客要求做四轮定位，因为他们知道四轮定位与车轮和转向有关，但是，倘使顾客因车速超过每小时40英里车辆出现振动而要求做四轮定位，原因是这样吗？NotesPassage1HotTipUnit5ProductInspection4.Dependingonthesituation,sometestsaredonewiththecomponentinstalledinthevehicle,whileothersneedtobetestedindependently,withthecomponentremovedfromthevehicle.在此种情况下，就要对车上安装的某个部件进行一些随车检测，而其他部件则要从车上拆下来进行独立检测。NotesPassage1Unit5ProductInspection

TasksI.Answerthefollowingquestionsaccordingtothepassage.Howmanystepsarethereinthesystematicapproachforaneffectivediagnosis?Therearetensteps:(1)QuestionsandAnswers.(2)ClarifytheComplaint.(3)VerifytheComplain.(4)Climate,Speed,Time,Distance,andAction.(5)UtilizetheResourcesthatAreAvailabletoYou.(6)BeginwithanAreaTest.(7)PerformtheSystemTest.(8)PinpointorComponentTest.(9)ApprovalandRepair.(10)ConfirmandRetest.2.Whatistheobjectiveofanareatest?

Theobjectiveistoexcludeallothercomponentsthathavenothingtodowiththeproblemanddeterminetherootcause.3.Whatistheobjectiveofthesystemtest?

Theobjectiveistodeterminewhichpartorcomponentofsystemisnotfunctioning.Passage1Unit5ProductInspection

TasksII.TranslatethefollowingexpressionsintoChineseorEnglish.1.fueldeliverysystem2.fuelpump3.ignitionsystem4.aftermarketequipment5.维修手册6.局部测试7.抗压试验8.精确定位检测Passage1供油系统燃油泵

点火系统售后零件市场servicemanualareatestcompressiontestpinpointtestUnit5ProductInspection

TasksIII.TranslatethefollowingsentencesintoChinese.1.Regardlessofthesymptom,concern,orsystem,aspecificguidelineforauniformdiagnosticproceduremustbeestablished.

不论针对什么故障症状、影响因素或系统，必须确立一个具体的指导准则，以便形成统一的诊断流程。2.Wheneverpossible,youshoulduseallavailableinformationandotherresourcestoeffectivelydiagnosetheproblem,theleastofwhichisyourownexperience.

应该尽可能运用所有可用的信息和资源，至少要利用自己的经验，帮助你对故障进行有效诊断。3.Theareatestgivesyouthebroadestandquickestoverviewandassessmentofthesystemsinquestion.

局部测试可对怀疑有故障的系统进行最广泛、最快速的评估。4.Thesetestsmaybeassimpleasavisualinspectionofacomponentafterdisassembly,aprecisemeasurementofapart,oradynamictestwithatestinstrument.

这些检测可能是对拆下部件进行简单的外观检测，也可能是对一个部件进行精确测量，或是使用检测仪器进行动态测试。

Passage1HotTipUnit5ProductInspectionAutomotiveTestingEquipmentThetune-uptechnicianmustbeveryfamiliarwithandcompetentintheuseofvariousformsoftestequipment.Withtheaidofthisequipment,thetechniciancanperformtwoveryimportanttasks.Forinstance,thetestinstrumentswhenproperlyusedquicklypinpointmalfunctionswithintheengineandtheignition,fuel,electrical,andemissioncontrolsystems.Inaddition,thissameequipmentisanexcellentqualitycontroltool.翻译Passage2HotTipUnit5ProductInspectionLeakdetectorThisinstrumentisusedforlocatingleaksinanypressureandvacuumsystem,andisalsousedtoexaminethedischargetroublesinelectricapparatus.Theinstrumentconsistsofmainbody,ultrasonicprobe,ultrasonicmicrophoneandultrasonictransmitteretc.DieselSmokeMeterThisinstrumentisusedforthemeasurementofsmokeemittedfromvehiclewithdieselengine.Theinstrumentisthussuitableforinvestigatingbothsteady-stateandtransientconditions,butsuffersfromlackofsensitivity.Theopacimeterisessentiallyaninstrumentforuseonenginetestbedorchassisdynamometerandanexhaustextractionsystemisneeded;thisshouldnotcausedistortionoftheplume.Ifusedintheopenairitisclearthattheplumemustbeshieldedfromwind.翻译Passage2HotTipUnit5ProductInspection

AutomotiveEmissionAnalyzerThisequipmentisusedforanalyzingtheconcentrationofCOandHCcontentinvehicleemissiongasfrom2-strokeand4-strokegasolineengineandmotorcycleinidlingmode.Thisisatypeofnon-dispersiveinfraredabsorptionanalyzer.Theinfraredanalyzerisadevicethatmeasurestheamountofhydrocarbons(HC)andcarbonmonoxide(CO)inavehicle’sexhaust.Bothofthesecompoundsareharmfulairpollutants.Hydrocarbonsinavehicle’sexhaustrepresentunburnedgasoline.Iftheenginedoesnotburnupallthefuelduringthecombustionprocess,rawgasolinegoesoutthetailpipeandregistersasHConthemeter.ThemeterontheanalyzermeasuresHCemissionsinpartspermillion(ppm).Ontheanalyzer’sCOmeter,therichnessor1eannessofamixtureisshownbythepositionoftheneedle.Thericherthemixture,forexample,thehighertheneedledeflects,indicatingagreaterpercentageofCOintheexhaustsample.TheanalyzermeasurestheamountofCOintheexhaust,usingapercentagefigure.MicrocomputerisedEngineAnalyzerItconsistsofthemainpart,sensorsandindicator.Themainpartisameasuringanddata-handlingsystemwithamicrocomputer．Therearesevensensors–ignition,powersupply,voltage,oilpressure,cylinderpressure,vibrationandfuelinjectionsensors.翻译Passage2HotTipUnit5ProductInspectionChassisDynamometerThechassisdynamometerisanotherveryimportantdiagnostictool,foundinmanytune-upspecialtyshops.Thechassisdynamometermeasuresthemechanicalpowerofthevehicleatthedrive-wheelsandprovidestheoperatorwithareadoutinunitsofroadspeedandpower.Inaddition,thechassisdynamometeralongwithanengineanalyzerpermitstheoperatortoexamineenginesystemsindetailwiththevehicleoperatingunderaloadedcondition.Thetypicalchassisdynamometerconsistsoftworollers,aremotecontrolpendant,andreadoutinstruments.Thetworollerscradlethevehicle’sdrivewheels.Oneoftherollerscouplesdirectlytoapowerabsorptionunit.Thepowerabsorptionunitappliesavaryingloadonthisrolleruponcommandfromtheoperator.Thepowerabsorptionunitthenactsasaveryeffectivebrake,whichapplies,throughtheroller,resistancetodrive-wheelrotation.Thegreatertheloadappliedbytheabsorptionunittotheroller,themorehorsepowerisnecessarytoturnitatanygivenspeed.Thus，atconstantdrive-wheelspeed,thehorsepoweroutputcanbemadetovarybychangingtheload,appliedbytheabsorptionunit.Also,theoperatorcanvarythehorsepoweroutputwithaconstantloadappliedtothedrive-wheelsbychangingtheenginespeed.Theremotependantisahand-heldcontrolusedtoactivatethepowerabsorptionunit.Thecontrolitselfhastwobuttons:onandoff.Whenthetechnicianpushestheonbuttonin,thepowerabsorptionunitbeginstoloadtheroller.Theoffbutton,ontheotherhand,de-energizesthepowerabsorptionunit,thusreleasingtheloadfromtheroller.Thespeedandpowerinstrumentpanelcontainstwolarge,illuminatedmeters:speedandpower.翻译Passage2HotTipUnit5ProductInspectionAutomobileFrontwheelAlignerThisisaspecialdeviceformeasuringthewheelcamber,thekingpincasterandthekingpininclinationofautomobile.Automobileside-slipTesterThisinstrumentisusedfortestingthedynamiclocationofthefrontwheelsofautomobile.Itconsistsofthetestingdevice,thequantitativeindicatingdeviceandthequalitativedisplayingdeviceofthesideslip.AutomobileSpeedometerTesterThisequipmentisusedforcheckingtheprecisionandtheperformanceofautomobilespeedometer.Itconsistsofthespeed-testdevice,speed-displaydeviceandspeed-alarmdevice.TorquemeterThisisatorquemeterwithmicrocomputer;it’susedformeasuringtorque,speedandpowerofengine,motorandgearbox,etc.翻译Passage2HotTipUnit5ProductInspectionReactionTypeAutomobileBrakeTesterThisisaninstrumentforcheckingthebrakingperformanceofautomobile.Itconsistsoftheac-tuatingdevice,brakingforcesupposingdevice,brakingforcedetectingdeviceandbrakingforceindicatingdevice.AutomobileComprehensivetesterThisinstrumentisusedforthedeterminationofdynamicandeconomicpropertyinautomobiletest．Itconsistsofmainpartandsensors.Themainpartconsistsofasingleboardcomputerandaninterfacecircuitplate.Sensorsincludethefifthwheelsensor,fuelconsumptionsensor,pullingforcesensor,revolutionsensorandbrakepedalsensor.PerformanceTesterofInternal-Combustion-EngineThisisatesterformeasuringthepower,fuelconsumptionandrotationalspeedofengine.Itconsistsofamicrocomputerandaprintingsystem.Itisusedinenginetestrunincombinationwithvariousdynamometers.翻译Passage2HotTipUnit5ProductInspectionWheelDynamicBalancerThisisaspecialequipmentforconductingbalancing.Theelectricalloggingsystemanalysesandhandlessignalswithasingleboardcomputer.Dynamicimbalance,unlikestaticimbalance,canonlybedetectedwhenthewheelisrotating.Dynamicbalancersoftheflinttyperequirethetiretobeinstaticbalancebeforeanydynamicbalancingisattempted.Dynamicimbalancecanthenbecheckedasthewheelisspun.Theweightsofthesizeindicatedareplacedonthewheelrimintheproperposition(180ofromeachotheronoppositewheelrims).Thewheelisrespuntomakesurethattheimbalancehasbeencorrected.Balancersofthesecondtype,thosethatcombinestaticanddynamicbalancefunctions,useasensingmechanismthatissensitivetotheentireweightcharacteristicofthetireandwheelassembly.Thisallowsimbalancetobecorrectedwithoneweightoneachsideofthewheel.翻译Passage2HotTipUnit5ProductInspectiontechnician[tek'niʃən] n.技师，技术员；技巧纯熟的人pinpoint['pinpɔint] vt.查明；准确描述adj.精确的；详尽的instrument['instrumənt] n.仪器；器械；工具apparatus[,æpə'reitəs] n.装置，设备transient['trænziənt] adj.短暂的；路过的sensitivity[,sensi'tiviti] n.敏感；敏感性；[医]过敏opacimeter[,əupə'simitə] n.暗度计；烟度计；光密度计shield[ʃi:ld] n.盾；防护物；保护者vt.保卫；包庇pollutant[pə'lu:tnt] n.污染物hydrocarbon[,haidrəu'kɑ:bən] n.碳氢化合物tailpipe['teilpaip]n.排气管needle['ni:dl]n.针；指针；刺激vi.缝纫；做针线deflect[di'flekt]vt.使偏斜；使转向；使弯曲microcomputer[,maikrəukəm'pju:tə]n.[计]微型计算机；[计]微电脑cradle['kreidl] n.摇篮；发源地；发祥地vt.抚育；支持readout['ri:daut] n.读出；读出器dynamic[dai'næmik] adj.动力的；动力学的；动态的；有活力的quantitative['kwɔntitətiv] adj.定量的；量的，数量的speedometer[spi'dɔmitə] n.速度计；里程计torquemeter['tɔ:k,mi:tə] n.转矩计，转矩测定仪NewwordsPassage2HotTipUnit5ProductInspectiontune-up 发动机的调整leakdetector 泄露检查器ultrasonicprobe 超声波探测器ultrasonicmicrophone 超声波扩音器ultrasonicmicrophone 超声波信号发送器dieselsmokemeter 柴油机烟度计chassisdynamometer 底盘测功机infraredabsorptionanalyzer 吸收式红外分析仪enginetestbed 发动机试验台engineanalyzer 发动机分析仪drive-wheel 驱动轮powerabsorptionunit 动力吸收单元frontwheelaligner 前轮定位仪wheelcamber 车轮外倾角kingpincaster 主销后倾角kingpininclination 主销内倾角side-sliptester 侧滑测试仪speedometertester 车速表测试仪brakingperformance 制动性能automobilebraketester 汽车制动测试仪fifthwheelsensor 第五轮传感器fuelconsumptionsensor 燃油消耗传感器

PhrasesandExpressionsPassage2HotTipUnit5ProductInspection

1.Thetestinstrumentswhenproperlyusedquicklypinpointmalfunctionswithintheengineandtheignition,fuel,electrical,andemissioncontrolsystems.正确使用检测仪器有助于快速查找发动机、点火系、燃油系、电器和排放控制系统内的故障。2.Thisinstrumentisusedforlocatingleaksinanypressureandvacuumsystem,andisalsousedtoexaminethedischargetroublesinelectricapparatus.泄漏检查器用于查找所有压力和真空系统中的泄露点，也用于检查电气设备中的漏电故障。3.Theopacimeterisessentiallyaninstrumentforuseonenginetestbedorchassisdynamometerandanexhaustextractionsystemisneeded;thisshouldnotcausedistortionoftheplume.吸光系数烟度计实际上是用于发动机试验台或底盘测功机上的仪器，它要与废气采集系统同时使用，这种烟度计测量烟度时不会错误。Passage2NotesHotTipUnit5ProductInspection4.ThisequipmentisusedforanalyzingtheconcentrationofCOandHCcontentinvehicleemissiongasfrom2-strokeand4-strokegasolineengineandmotorcycleinidlingmode.汽车排气分析仪用于分析二冲程、四冲程汽油机车辆以及摩托车怠速状态下的尾气中的CO的浓度和HC化合物的含量。5.Thechassisdynamometermeasuresthemechanicalpowerofthevehicleatthedrive-wheelsandprovidestheoperatorwithareadoutinunitsofroadspeedandpower.底盘测功机能测量车辆驱动轮上的机械功率，并能给操作员提供出以道路行车速度和功率为单位的读数。6.Thegreatertheloadappliedbytheabsorptionunittotheroller,themorehorsepow