torsion shaft

例句：

1. 1.The car's steering wheel is a torsion shaft that allows the driver to turn the vehicle.
   汽车的方向盘是一个扭转轴，允许驾驶员转动车辆。
2. 2. The machine has a torsion shaft that can be adjusted to change its speed.
   这台机器有一个可调节的扭转轴，可以改变其速度。
3. 3. The engineer used a torsion shaft to reduce vibration in the machinery.
   工程师使用扭转轴来减少机械中的振动。