reverse idler gear shaft

例句：

1. 1.The engineer designed a reverse idler gear shaft to improve the efficiency of the machine.
   工程师设计了一个倒置的惰轮轴，以提高机器的效率。
2. 2. The new design of the reverse idler gear shaft has greatly improved the performance of the machinery.
   新设计的倒置惰轮轴极大地提高了机械设备的性能。
3. 3.The engineer used the reverse idler gear shaft to reduce the noise and vibration of the machine.
   工程师使用倒置惰轮轴来减少机器的噪音和振动。