motor dragging 马达拖动
Motor dragging and servo load of hydraulic pressure system has been looked as the front subject of the technology of hydraulic pressure.
液压伺服马达拖动和液压伺服加载，目前列为液压技术研究的前缘学科。
The utility model relates to a liquid soft starting and speed governor of AC motor, belonging to the dragging and controlling filed of motor.
本实用新型名称为三相交流电动机液态软起动调速装置。
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