说明：  电机控制是指，对电机的启动、加速、运转、减速及停止进行的控制。根据不同电机的类型及电机的使用场合有不同的要求及目的。
(Motor control is the control of starting, accelerating, running, slowing down and stopping of the motor. There are different requirements and purposes according to the types of motors and the use occasions of motors.)