三開(kāi)道岔 three rail turnout: 三軌道岔three-throw: 三曲柄的; 三通的symmetrical three phase circuit: 對(duì)稱三相電路symmetrical three-phase load: 對(duì)稱三相負(fù)載symmetrical three-phase source: 對(duì)稱三相電源下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯