differential device

• 差动机构

differential device的用法和样例：

例句

1. When the driving pulley rotates, the axis of the differential mechanism will move due to the different diameters of the differential pulleys.
   当主动轮转动时，由于大小差动带轮的直径不同，差动机构就不会停留在原处，而会以一定的规律移动。