该（旋转）环由电动机带动，其转速等于电动机的转速。

The ring is driven by a motor, revolving at motor speed.

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电动机的动力通过皮带传送给变速箱，经变速箱降速增扭后，将动力传给制粒圆盘主轴，带动制粒圆盘旋转。

Power of motor is convected to gearbox through belt, and after slowdown and increase torsion, the power is passed to the main shaft of the disc and drive it to rotate.

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相应地也带动了对交流传动钻机用变频调速异步电动机的研究。

This stimulates us to research on VVVF asynchronous motors for AC driving rig.

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