secondary lock rod

例句：

1. 1.The secondary lock rod is used to secure the door.
   次要锁杆用于固定门。
2. 2.The engineer checked the secondary lock rod before starting the project.
   工程师在开始项目之前检查了次要锁杆。
3. 3. The secondary lock rod was damaged during the accident.
   事故中次要锁杆受损。