[生]电势 electromotive force: 电动势。 ac electromotive force: 交变电动势; 交流电动势additional electromotive force: 附加电动势alternating current electromotive force: 交羚动势alternating electromotive force: 交变电动势; 交流电动势下载手机词典可随时随地查词查翻译