movable drive machine

• 活齿传动机构

movable drive machine的用法和样例：

例句

1. The movable teeth transmission can turns a gear wheel into multi-teeth meshing transmission which can do radial sports.
   活齿传动是将相互啮合的一个齿轮轮齿制成可以径向运动的多齿啮合传动。