rear axle differential spider pinion

例句：

1. 1. The rear differential is responsible for transferring power from the rear wheels to the frontwheels.
   后差速器负责将动力从后轮传递到前轮。
2. 2. The differential gears in the transmission system are designed to provide smoother and more efficient shiftingbetween the different speed ratios.
   传动系统中的差速器齿轮设计用于提供更平滑和更有效的不同速度比之间的换挡。
3. 3. During heavy braking, the rear differential can disengage to prevent damage to the rear wheels.
   在重刹车时，后差速器可以脱开，以防止对后轮造成损坏。