miniature valve

例句：

1. 1.The miniature valve is responsible for controlling the flow of oil through the system.
   微型阀门负责控制油通过系统的流动。
2. 2. The engineers had to replace the old miniature valve with a new one.
   工程师们不得不用一个新的来替换旧的微型阀门。
3. 3.The miniature valve was designed to be easy to install and maintain.
   微型阀门被设计成易于安装和维护。