master cylinder bottom valve

例句：

1. 1.The master cylinder is responsible for controlling the flow of oil to the engine.
   主缸负责控制油流向发动机的流动。
2. 2.The master cylinder bottom valve is a critical component that needs to be maintained regularly.
   主缸底阀是一个重要的组件，需要定期维护。
3. 3.During maintenance, the technicians carefully inspected the master cylinder bottom valve to ensure it was functioning properly.
   在维护期间，技术人员仔细检查了主缸底阀，以确保其正常工作。