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1.2 for an impulse source there shall be a peak reading instrument voltmeter connected directly to the electrode head, indicating continually the potential of the electrode with or without a grounded test wire in the chamber.
脉冲火花机，电压表直接接在试验电极上，显示的是测试电线没有接地的情况下的峰值电压。收藏指正
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