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1.This research is put forward because the tradition spiral rope slot reel can not satisfy many layers of real needs winding up in the big lift and heavy load hoist, and the design and development of reel product are grown to put forward period.
本研究是根据传统螺旋绳槽卷筒不能满足大扬程、大起重量的起重机卷筒多层卷绕的实际需要，且卷筒产品的设计、开发周期长而提出的。收藏指正
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