piston ring with taper face

例句：

1. 1. The pistonring with a tapered face is essentialfor smooth operation of the engine.
   带有锥形面的活塞环对于发动机的平稳运行至关重要。
2. 2. The manufacturer has designed this pistonring with a tapered face to improvefuel efficiency.
   制造商设计了这种带有锥形面的活塞环，以提高燃油效率。
3. 3. Thepiston ring with a tapered facecan effectively prevent oil leakage and maintainengine performance.
   带有锥形面的活塞环能有效防止油泄漏，并保持发动机性能。