The dc voltage is obtained by rectifying and filtering the line voltage, most often by the diode-rectifier circuit.

直流电压通过对工频电压整流和滤波得到。通常是使用二极管整流电路。

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This introduces introduces such new developed technics as digital wave filtering and rectifying, etc.

该仪器采用了数字滤波消偏等新技术。

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