07-08专业英语.doc

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1、07-08专业英语一、将下列英文短语翻译成中文（每个1分）1、Electricalmachine2、direct-currentgenerator3、alternating-currentpowergenerationanddistribution4、three-phasealternatingcurrent5、three-phaseinductionmotor6、air-gaplength7、turbo-generator8、singlyexcited9、revolvingmagneticfield10、squirrel-cage11、com

2、pound-woundDCmotor12、permanent-magnetDCmotor13、series-woundDCmotor14、shunt-woundDCmotor15、thelawofconservationofenergy16、thelawofconservationofmass17、thelawofconservationofmomentum18、magnetizationcurve19、figureofmerit20、doublyexcited21、toggleswitch22、pushbuttonswitch23、limit

3、switch24、footswitch25、pivotpoint26、phasesequence27、solid-staterelay28、timingrelay29、single-phaseinduction-motorreversing30、doublepoledoublethrowswitch31、stepresponse32、pulseresponse33、rampresponse34、unityfeedbacksystem35、signalconditioningandmodification36、straightbinarycode

4、37、zero-orderholdoperation38、Halleffect39、roboticmanipulator40、quantizationerror二、写出下列英文缩写的全部英文单词（每个1分）1、TTL2.ADC3.DAC4.ASCII5.BCD6.CEMF7.PB8.SPSTswitch9.NC10.NO三、将下面英文翻译成中文（共10分）Tachometersareusedtoprovideananalogsignalproportionaltotheshaftvelocity.Intheabsenceofsuchveloci

5、tysensors,thevelocityfeedbackisderivedbytakingdifferencesofsensedpositionovertime.Thisnumericaldifferentiationcanintroducebothnoiseandatimelag.Despitethesepotentialproblems,mostmanipulatorsarewithoutdirectvelocitysensing.四、将下面英文翻译成中文（共10分）Aone-to-onerelationshipmaynotalwayse

6、xistbetweenameasuringdeviceandameasuredvariable.Forexample,althoughstraingagearedevicethatmeasurestrains(and,hence,stressandforces),theycanbeadaptedtomeasuredisplacementsbyusingasuitablefront-endauxiliarysensorelement,suchasacantilever(orspring).五、将下面英文翻译成中文（共10分）Relaysarewi

7、delyusedcontroldevices.Theyhaveanelectromagnetwhichcontainsastationarycore.Thatmountedclosetooneendofthecoreisamovablepieceofmagneticmaterialcalledthearmature.Whenthecoilisactivatedelectrically,itproducesamagneticfieldaroundthemetalcore.Thearmatureisthenattractedtowardthecor

8、e.Whenthecoilisdeenergized,thearmatureisreturnedtoitsoriginalpositionbyspri