speed regulating handwheel

例句：

1. 1. The engineer used a speed regulating handwheel to adjust the machine's speed.
   工程师使用调速手轮来调整机器的速度。
2. 2. The car's speed regulating handwheel is easy to operate.
   汽车的调速手轮操作简单。
3. 3. The driver must use the speed regulating handwheel to control the vehicle's speed.
   驾驶员必须使用调速手轮来控制车辆的速度。