A unit of energy, especially electrical energy, equal to the work done by one watt acting for one hour and equivalent to3, 600joules.是什么意思_A unit of energy, especially electrical energy, equal to the work done by one watt acting for one hour and equivalent to3, 600joules.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句