primary motion

• 主运动

primary motion的用法和样例：

例句

1. In order to adjust the parameter conveniently, the driving systems of the main motion are independently, and their velocities are controlled by two different transducers.
   为方便运动参数的调整，对主运动与辅助运动分别采取了两套各自独立的驱动系统，其速度调节分别采用了变频器控制电机转速来实现。