Step motor control, by pulse by changing the order of electricity can change the motor rotation direction, change the pulse frequency can change the motor rotation speed.
步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。
Stepping motor control by pulse, by changing the order of power to change the direction of rotation motor, change the pulse frequency may change the motor rotation speed.
步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。
Moment of inertia: turning around its axis of symmetry, object has the character keeping speed and the direction of the axis of rotation not changing.
转动惯性：物体在绕着自己的对称轴转动时，具有保持转速和转动轴方向不变的性质。
Reversible rotor extends a much longer service life of wearing parts due to the reversible feed guiding mechanism and the automatic changing of motor rotation direction by dint of limited switches.
可换向进料导向机构和通过行程开关自动改变电机的转向，从而实现转子正反向工作，大大延长易损件的使用寿命；
After solid plastics from the hopper into the barrel, as the rotation of the screw head direction, in the process, plastic physical conditions are constantly changing.
固态塑料由料斗进人料筒后，随着螺杆的旋转向机头方向前进，在此过程中，塑料的物理状态在不断发生着变化。
After solid plastics from the hopper into the barrel, as the rotation of the screw head direction, in the process, plastic physical conditions are constantly changing.
固态塑料由料斗进人料筒后，随着螺杆的旋转向机头方向前进，在此过程中，塑料的物理状态在不断发生着变化。
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