例句與造句

1. Ans ： it can be caused by power electronic devices , control circuits , arcing equipment , load with solid - state rectifier and switching power supplies
   它可能由電力電子設(shè)備、控制電路、形成弧光的設(shè)備、裝載以固體整流器和交換的電源造成。
2. It's difficult to find solid-state rectifier in a sentence. 用solid-state rectifier造句挺難的