piston lock pin

例句：

1. 1. The engine's piston lock was damaged during the repair.
   发动机的活塞锁在修理时损坏了。
2. 2.The technician had to replace the piston lock pin after the engine overheated.
   技术人员不得不在发动机过热后更换活塞锁销。
3. 3.The engineer used a special tool to remove the piston lock pin and replace it with a new one.
   工程师使用特殊工具来移除活塞锁销并换上新的。