air-compressor piston ring

例句：

1. 1. The air compressor piston ring is a crucial component of theair compressor.
   空气压缩机活塞环是空气压缩机的关键部件。
2. 2. The piston ring in the aircompressor needs to bereplaced regularly to ensure smooth operation.
   空气压缩机中的活塞环需要定期更换，以保证正常运行。
3. 3. The air compressor pistonring plays a vital role in maintaining theefficiency and performance of the air compressor.
   空气压缩机活塞环在保持空气压缩机效率和性能方面起着至关重要的作用。