idler shaft gear

例句：

1. 1.The idler shaft gear is essential for the smooth operation of the machine.
   惰轮轴齿轮对于机器的顺畅运行至关重要。
2. 2. The idler shaft gear was designed to reduce friction and improve efficiency.
   惰轮轴齿轮被设计来减少摩擦并提高效率。
3. 3. The idler shaft gear plays a crucial role in the transmission of power from the engine to the wheels.
   惰轮轴齿轮在将发动机的动力传递到车轮中起着关键作用。