电气工程及其自动化专业英语.ppt

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1、电气工程及其自动化专业英语SpecializedEnglishforElectricalEngineering＆ItsAutomation戴文进主编杨植新副主编ContentsPart1ElectricsandElectronicsPart2ElectricMachineryPart3ElectricalEngineeringPart4ModernComputerControlTechniquesUnit1SpecializedEnglishWordscircuitcomponents电路元件circuitparameters电路参数thedielec

2、tric电介质storagebattery蓄电池electriccircuit电路wire导线electricaldevice电气设备electricenergy电能energysource电源primarycell原生电池secondarycell再生电池energyconverter电能转换器e.m.f.＝electromotiveforce电动势unidirectionalcurrent单方向电流circuitdiagram电路图loadcharacteristic负载特性terminalvoltage端电压externalcharacteris

3、tic外特性Conductor导体loadresistance负载电阻generator发电机heatingappliance电热器direct-current(D.C.)circuit直流电路magneticandelectricfield电磁场time-invariant时不变的self-(ormutual-)induction自（互）感displacementcurrent位移电流voltagedrop电压降conductance电导volt-amperecharacteristics伏安特性metal-filamentlamp金属丝灯泡carb

4、on-filamentlamp碳丝灯泡non-linearcharacteristics非线性特性Unit1CircuitElementsandParametersAnelectriccircuit(ornetwork)isaninterconnectionofphysicalelectricaldevices.Thepurposeofelectriccircuitsistodistributeandconvertenergyintosomeotherforms.Accordingly,thebasiccircuitcomponentsareanene

5、rgysource(orsources),anenergyconverter(orconverters)andconductorsconnectingthem（连接它们的）.Anenergysource(aprimaryorsecondarycell,ageneratorandthelike)convertschemical,mechanical,thermalorsomeotherformsofenergyinto（将---转换成---）electricenergy.Anenergyconverter,alsocalledload(suchasala

6、mp,heatingapplianceorelectricmotor),convertselectricenergyintolight,heat,mechanicalworkandsoon.Eventsinacircuitcanbedefinedintermsof（用---，根据---）e.m.f.(orvoltage)andcurrent.Whenelectricenergyisgenerated,transmittedandconvertedunderconditionssuchthatthecurrentsandvoltagesinvolvedr

7、emainconstantwithtime,oneusuallyspeaksofdirect-current(D.C.)circuits.Withtime-invariantcurrentsandvoltages,themagneticandelectricfieldsoftheassociatedelectricplantarealsotime-invariant.Thisisthereasonwhynoe.m.f.sofself-(ormutual-)induction（自感或互感）appearinD.C.circuits,norarethere（

8、倒装结构）anydisplacementcurrents（位移电流）inthedielectr