diaphragm ring

例句：

1. 1. Diaphragm ringsare used to prevent leaks in theengine.
   隔膜环用于防止发动机泄漏。
2. 2. Theengineer carefully fitted the diaphragm ring onto the valve.
   工程师小心地将隔膜环安装到阀门上。
3. 3. Thediaphragm ring is acrucial component of the engine's sealing system.
   隔膜环是发动机密封系统的关键部件。