机电英语课件 Chapter 3-1 Electrical Components

ElectricalComponentsCHAPTER3时间：202X.XLearningObjectives01030204recognizethetermsrelatedtoelectricalcomponentsandelectricalmaterialstalkaboutelectricalcomponentsandtheirfunctionselicittheinformationabouttheelectricalcircuitdescribewhatasimplecircuitconsistsofLookandMatchWarmingUpinductorcapacitorresistortransistorbuttoncircuitbreakerthermal

relayintermediate

relayProgrammable

Logic

ControllerObserveandSayWhatdoesthesesymbolsstandfor?WarmingUpresistorthermal

relayinductorcapacitortransistorbuttonThinkandSayWarmingUpinductorresistorcircuit

breakercapacitorbuttonintermediate

relaythermal

relayProgrammable

Logic

ControllerListening√√ListeningTTTTFListeningcapacitorscomponentsresistorsvoltagerubber2.4ListenandimitateA:Hey!Rememberwhatwelearnedaboutelectricalcomponentsinclass?B:Certainly!Welearnedresistors,capacitors…A:Letmecheckyourunderstanding!Whatisaresistor?B:Aresistorisacomponentthatresiststheflowofelectriccurrent.A:Bingo!Whataboutcapacitors?B:Theystoreelectricalenergyandsmoothoutvoltagefluctuations.A:That’sright!Thermalrelay?B:Isthatanelectricalcomponent?Iforgot.A:Yes,itismainlyusedtoprotectelectricmotorsandotherelectricalequipmentfromoverheating.Materialslikerubberandplasticareusedtoprotectusfromshocks.B:OhIsee.So,wehavealongwaytogoaboutelectricalmaterial.A:Absolutely!Practicetheabovedialoguewithyourpartner.A:Hey!Rememberwhatwelearnedaboutelectricalcomponentsinclass?B:Certainly!Welearned…A:Letmecheckyourunderstanding!Whatisa...?B:...A:Whatabout...?B:Isthatanelectricalcomponent?Iforgot.A:...SpeakingWords&ExpressionsWarmingupintermediate:/ˌɪntərˈmiːdiət/,adj.&v.&n.adj.中间的，过渡的；中级的，中等程度的;v.使）介于中间；调解，斡旋;n.中间物；中间体；媒介

relay:/ˈriːleɪ/,n.&v.接力赛;继电器；接替人员，替班；v.转播，播放；转发，传递（信息、消息等）；thermal：/ˈθɜːrml/,adj.热的；热量的；保暖的

circuit:/ˈsɜːrkɪt/,n.电路；巡回；巡回演出；赛道breaker:/ˈbreɪkər/,n.断路器；破碎机；碎浪

button:/ˈbʌtn/,n.&v.n.按钮；纽扣;v.扣上；扣紧capacitor:/kəˈpæsɪtər/,n.电容器inductor:/ɪnˈdʌktər/,n.电感器；感应器

resistor:/rɪˈzɪstər/,n.电阻器transistor:/trænˈzɪstər/,n.晶体管；晶体管收音机ProgrammableLogicController(PLC):/ˈproʊɡræməblˈlɑːdʒɪkkənˈtroʊlər/n.,可编程逻辑控制器store:/stɔːr/,n.&v.,n.商店；贮存物；仓;v.储存；贮藏；保存energy:/ˈenərdʒi/,n.,能量；精力；活力；能源resist:/rɪˈzɪst/;v.,抵抗；抵制；忍住；反抗flow:/floʊ/,n.&v.n.流动；流量；流畅；连贯;v.流动；流淌；飘扬；流畅地进行voltage:/ˈvoʊltɪdʒ/,n.电压；伏特数Words&Expressionsfluctuation:/ˌflʌktʃuˈeɪʃn/ n.波动；起伏insulation:/ˌɪnsjuˈleɪʃn/ n.绝缘；隔热；隔离prevent:/prɪˈvent/ v.预防；防止；阻止plastic:/ˈplæstɪ