steering gear back lash

例句：

1. 1.The car's steering gear back lash was causing problems with the steering wheel.
   汽车的转向装置后拉杆导致方向盘出现问题。
2. 2.The engineer had to adjust the back lash of the gearbox to improve performance.
   工程师不得不调整变速箱的后拉杆以改善性能。
3. 3. The new design reduces the back lash of the gearbox, making it more efficient.
   新设计减少了变速箱的后拉杆，使其更加高效。