contactor board

例句：

1. 1. The engineers were busy installing the new contactor board in the factory.
   工程师们忙于在工厂安装新的接触器板。
2. 2. The technician had to replace the faulty contactor board before the machine could start again.
   技术员不得不更换故障的接触器板，以便机器能够重新启动。
3. 3. The contactor board is responsible for connecting and disconnecting the electrical circuits.
   接触器板负责连接和断开电气电路。