The most common measuring and testing instruments are voltage testers, voltmeter, ammeter, ohmmeters, continuity testers, megohmmeters, wattmeters, and watt-hour meters.
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- 最常用的测量和检验仪器有电压测试仪,电压表,电流表,欧姆表,短路测试仪,兆欧表,功率表和电度表。