释义 n.[电] 毫伏计 实用短语af millivoltmeter音频毫伏表digital millivoltmeter数字式毫伏表transistorized millivoltmeter晶体管毫伏表dc wide range millivoltmeter直流多限量毫伏表vacuum valve millivoltmeter真空管毫伏计high-frequency millivoltmeter高频毫伏表millivoltmeter regulator毫伏计调节器