短語詞組短語back electromotive force coefficient 反電勢系數(shù)back pull force 反拉力back electromotive force [電磁]反電動(dòng)勢;反電勢法;[電磁]逆電動(dòng)勢;反電勢back office force 內(nèi)勤人員back and force 來回地pipeline back drag force 管道回拖力Strike Back Elite Force 反擊精銳部隊(duì)BEMF Back ElectroMotive Force 反電動(dòng)勢back electromotive force cell 反壓電池;反電動(dòng)勢電池 返回 back force