lever locking

例句：

1. 1. The lever locking mechanism is responsible for the safe operation of the machine.
   杠杆锁定机制负责机器的安全操作。
2. 2. The engineer used a lever locking device to secure the heavy box.
   工程师使用杠杆锁定装置来固定这个沉重的箱子。
3. 3. When opening the door, the lever locking system automatically disengages the bolts.
   当打开门时，杠杆锁定系统会自动松开螺栓。