[電] 對(duì)稱多相電源 polyphase symmetrical system: 多相對(duì)稱系統(tǒng)symmetrical polyphase circuit: 對(duì)稱多相電路symmetrical polyphase system: 對(duì)稱多相制balanced polyphase source: 平衡多相電源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