曲径汽封和活塞环提供了双密封系统，使油保持洁净并减少磨损。

Labyrinth seal and piston ring provide a dual sealing system, keeping oil clean and reducing wear.

youdao

曲径汽封和活塞环提供了双密封系统，使油保持洁净并减少磨损。

Labyrinth seal and piston ring provide a dual sealing system, keeping oil clean and reducing wear.

youdao