rocker cam

例句：

1. 1. The rocker cam on the steering wheel controls the speed of the car.
   方向盘上的摇杆控制了汽车的速度。
2. 2. The engineer adjusted the rocker cam to improve fuel efficiency.
   工程师调整了摇杆以提升燃油效率。
3. 3. The rocker cam is a crucial component in the engine's operation.
   摇杆是发动机操作中的关键部件。