A device for regulating the direction of an electrical current, usually resulting in making one continuous flow.

【电】整流器；整流子；电流整换器。

Switch for throwing an electric current in two or more ways or directions.

【电】换向器。

An element of a mathematical group that when multiplied by the product of two given elements yields the product of the elements in reverse order.

换位子(数群的一个元素，用两个已知元素的积相乘后，得出的数为该两元素的积的倒换数)。