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介绍一种既可组合又可分离的“活动”工字轮,其主要目的是解决钢丝工字轮卷线与非工字轮使用之间的矛盾。
This paper introduces a kind of “movable” I-shaped wheel that can be combined and separated. Its main purpose is to solve the contradiction between the use of the wire wheel and the non-round wheel.