digital voltmeter数: frequently; repeatedly子: son电压表: voltmeter; Vm电子电压表: electronic voltmeter模拟电子电压表测试方法: measuring methods for electronic analog voltmeters下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:数子电压表,即可在微信中查询翻译