The wattmeter connects with measured circuit direct when the power is low,then connects with measured circuit though mutual inductor when the rating of wattmeter of the voltage or current is overrun.是什么意思_The wattmeter connects with measured circuit direct when the power is low,then connects with measured circuit though mutual inductor when the rating of wattmeter of the voltage or current is overrun.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句