ganged switch

例句：

1. 1. The engineers were busy installing the ganged switches at the factory.
   工程师们正在忙于在工厂安装夹子开关。
2. 2. The old man used to use a ganged switch to light his house.
   这位老人过去常用一个夹子开关来点亮他的房子。
3. 3.The new switchgear has improved the efficiency of the power system.
   新的开关设备提高了电力系统的工作效率。