Use a 500V ohmmeter to measure all power cable insulation resistance. Each cable should be measured from line to line and line to shield and/or armour.是什么意思_Use a 500V ohmmeter to measure all power cable insulation resistance. Each cable should be measured from line to line and line to shield and/or armour.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句