mainshaft high speed sliding gear

例句：

1. 1.The mainshaft high speed sliding gear is crucial for the smooth operation of the machine.
   主轴高速滑动齿轮对于机器的平稳运行至关重要。
2. 2.The engineer replaced the mainshaft high speed sliding gear with a new one.
   工程师用一个新的替换了主轴高速滑动齿轮。
3. 3.The gearbox on the car has a mainshaft high speed sliding gear that can be adjusted to suit different driving conditions.
   汽车上的变速箱有一个主轴高速滑动齿轮，可以根据不同的驾驶条件进行调整。