This allows the connection to be made without a wrench, using a nut equipped with a hand wheel.
这使得不用扳手，而是使用带手轮的螺母就可以进行连接。
When a hand wheel is toggled, the nut connecting plate drives the hand piece of the suspended type submerged arc welding machine and a wire reel bracket to move axially.
拨动手轮时，螺母连接板带动悬挂式埋弧焊接机头与焊丝盘支架轴向移动。
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