专业英语8课件

Chapter8ProcessAutomaticControlSystem核心单词和词组AM：AmplitudeModulationFM：FrequencyModulationSignalMagnitude：信号幅度RF：radiofrequency：无线电频率，射频RadioFrequencyIdentification,RFID:射频识别Audiblefrequency：音频Broadcaststation：广播电台，广播站Radiate：发射，广播,辐射Submerge：沉浸，没入水中Icebath：冰点槽thermostaticbath：恒温槽核心单词和词组Linearizer：n.线性化电路Line,Linear,Linearizereproduction：再生，再现，复制，繁殖Beconcernedwith：参与，干预Feedback：反馈Feedforward：前馈Bimetallic：双金属的Setpointdial：设定刻度，给定刻度Setpoint：设定值，给定值Thermostat：温度调节装置，自动调温器句子分析ThelettersAMstandforAmplitudeModulation.Theymeanthattheamplitudeormagnitudeofaradiofrequency(RF)signaliscausedtovaryaccordingtothemagnitudeofalower-frequencysignal(audio,correspondingtoaudiblefrequencies)句子分析ThefunctionoftransmitterinanAMbroadcastsystemistoaccepttheinputsignalfromaninputdevice(microphone),usethissignaltocontroltheamplitudeofaradiofrequencysignal(eachbroadcaststationisassigneditsownradiofrequency),anddrivetheoutputdevice(theantenna)witharadiofrequencycurrenttoproduceelectromagneticwavesradiatingintospace.句子分析Thefunctionsofthereceiveraretoamplifyorincreasethestrengthoftherelativelyweaksignalobtainedfromtheantenna,tofilterorselectthedesiredradiofrequencysignalfromthesignalsofallotherbroadcaststations,torecovertheaudiosignalfromtheamplitudevariationsoftheradiofrequencysignal,andtodrivealoudspeakerwiththisaudiosignal.句子分析Inmeasurementsystem,therefore,oneexpectstobeconcernedwithlocatingandremovinganysmallerrorsthatmightbeaddedtothesignalateachstepoftheprocessingsequence.8.2IntroductiontoProcessControlAhostof：许多，一大群Regulate：调节Self-regulation：自动调节Referencevalue：参考值，标准值Setpoint：设定值，给定值Tank：槽，箱，坦克Level:水位，水平，等级Squareroot：平方根Flowrate：流速，流量核心单词和词组Modification：修改，改进Sighttube：瞄准管，液位指示管Controlledvariable：被控变量，被控量Controllingvariable：控制变