rotating valve gear

例句：

1. 1.The new model car has a more sophisticated rotating valve gear system.
   新款汽车拥有更先进的旋转阀齿轮系统。
2. 2. The engineers are working on the design of the rotating valve gear for the new plant.
   工程师们正在为新工厂设计旋转阀齿轮。
3. 3.The rotating valve gear is responsible for controlling the flow of oil in the engine.
   旋转阀齿轮负责控制发动机中油的流动。