conical pinion differential gear

例句：

1. 1.The differential gear is used in the engine to improve its efficiency.
   差速器齿轮用于发动机中以提高其效率。
2. 2. The design of the differential gear is crucial for the performance of the vehicle.
   差速器齿轮的设计对于车辆的性能至关重要。
3. 3. The differential gear is responsible for transmitting power from the engine to the wheels.
   差速器齿轮负责将发动机的动力传递给车轮。