脉冲火花机的校准是把数位电压表直接接在测试电极和地之间。
The impulse test equipment shall be calibrated by means of a peak detecting electronic voltmeter connected directly between the electrode head and ground.
66200系列数位式功率表是用来量测单相交流电源的功率及其他电压电流参数，适用于大部份的电机电器产品。
Chroma's 66200 Series Digital Power Meter is designed for single-phase measurements of AC power signals and related parameters common to most electronic products.
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