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随便看	voltage-ampere equation voltage amplifer voltage amplification voltage amplification coefficient voltage amplification degree voltage amplification factor voltage-amplification factor voltage amplification ratio voltage amplifier voltage amplifier circuit voltage amplifier stage voltage-amplifier tube voltage amplifying tube voltage amplitication coefficient voltage amplitude voltage-amplitude-controlled clamp voltage analog voltage and current voltage and current data loggers voltage and current distribution voltage and current monitoring voltage and current regulating circuit voltage and current sample voltage and current sampling Voltage and current standard source