齿轮A位于驱动轴的末端，齿轮b在副传动轴上，它们恒定啮合。
Gear a, at the end of the drive shaft, and gear B, on the countershaft, are in constant mesh.
也就是说，驱动力是从传动轴末端的传动齿轮输送到差速器的。
The driving power enters the differential through the drive pinion on the end of the propeller shaft.
也就是说，驱动力是从传动轴末端的传动齿轮输送到差速器的。
The driving power enters the differential through the drive pinion on the end of the propeller shaft.
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