three-valve

例句：

1. 1. This valve is used to control the flow of oil in the engine.
   这个阀门用于控制发动机中油的流动。
2. 2. The three-way valve allows for easy switching between different modes of operation.
   三通阀允许轻松切换不同的操作模式。
3. 3. The three-way valve is crucial for maintaining proper airflow in the system.
   三通阀对于保持系统内适当的气流至关重要。