拖拉机在我国农业中有着举足轻重的作用，它的行走系动力正是由变速器将发动机的动力传输给后桥部分。

Tractor play an important role in China's agriculture, its walking system is coming out by the transmission which can transfer the engine's power to the rear axle.

youdao

拖拉机在我国农业中有着举足轻重的作用，它的行走系动力正是由变速器将发动机的动力传输给后桥部分。

Tractor play an important role in China's agriculture, its walking system is coming out by the transmission which can transfer the engine's power to the rear axle.

youdao