contactor controlled traction equipment

例句：

1. 1.The contactor is responsible for ensuring the smooth operation of the system.
   接触者负责确保系统的顺畅运行。
2. 2. The contactor plays a crucial role in maintaining communication between different departments.
   接触者在维护不同部门之间的沟通中起着至关重要的作用。
3. 3. The contactor was able to resolve the issue quickly and efficiently.
   接触者能够迅速而有效地解决问题。