commutate

动词 commutate:

1. reverse the direction of (an alternating electric current) each half cycle so as to produce a unidirectional current

com.mu.tate

v.tr.（及物动词）
com.mu.tat.ed,com.mu.tat.ing,com.mu.tates
To reverse the direction of (an alternating electric current) each half-cycle to produce a unidirectional current.
变换电流方向：颠倒每一半周（交流电流的）方向，以产生单方向性电流

来源：
Back-formation from commutator
源自 commutator的逆构词