rotary control valve

例句：

1. 1.The rotary control valve is used to regulate the flow of oil in the engine.
   旋转控制阀用于调节发动机中油的流动。
2. 2.The rotary control valve is responsible for controlling the speed of the machine.
   旋转控制阀负责控制机器的速度。
3. 3. The rotary control valve is an essential component of the engine's fuel system.
   旋转控制阀是发动机燃料系统的一个关键部件。