exhaust valve spindle

例句：

1. 1. The exhaust valve spindleis responsible for discharging the exhaustgases from the engine.
   排气阀杆负责将发动机的废气排出。
2. 2. The exhaustvalve spindle needs to be replaced regularlyto ensure optimal performance.
   为了确保最佳的性能，排气阀杆需要定期更换。
3. 3. Theexhaust valve spindle is a critical componentof the engine's combustionsystem.
   排气阀杆是发动机燃烧系统的关键部件。