back-up
反电动势
back electromotive force【电磁】;back-emf【电磁】;counter electromotive force【电磁】
暂无补充释义。
相关词条
back teeth
book back gluing machine
back breaking
back-pedal brake with cams for cycles
back center (lathe center)
back-end computer
Yorkshire ladder-back chair【家具】