valve seat lock

例句：

1. 1.The valve seat lock is a crucial component in the engine's operation.
   阀门座锁是发动机运行的关键部件。
2. 2. The technician had to replace the valve seat lock after the engine overheated.
   在引擎过热后，技术人员不得不更换阀门座锁。
3. 3.The valve seat lock was designed to prevent leaks and ensure smooth operation of the engine.
   阀门座锁的设计旨在防止泄漏并确保发动机的平稳运行。