这个操作叫倒反,用符号i表示.This operation is called inversion and is symbolized i.反用换流器用于变直流电为交流电的仪器.A device used to convert current into alternating current....

“反用”的英语可以翻译为：antistrophe ...

“反用法”的英语可以翻译为：antiphrasis ...