rope round pulley
... 绕线预加应力：prestressing by winding 绕绳滑轮：rope round pulley 绕道;支路;支管;旁通管：by-pass ...
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绳索在排绳柱作用下，两个滑轮组绕柱子左、右灵活摆动，使绳索在卷绳轴形成有规则的排列。
Under arraying rope pillar function, two pieces of pulley block circles pillar to do left, right nimble swinging, which cause rope winds in regular arrangement.
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