Then the structural accident of total section drive-through type crack is caused in arch frame top chord, which is induced by hoisting and detection using pulley arbitrarily.

铜绿山矿某三铰拱屋架单轨吊梁结构体系，因技术改造增加设备简体重量，随意用滑轮组起吊检修，导致拱架上弦全截面贯通式开裂的结构事故。

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But Hutchings argues that the sketch actually shows blocks on the ground being pulled by a weight attached to a pulley—the same type of experiment you might do today in a high school physics class.

但是哈钦斯却认为，在这张草图中，放置在地上的数个方块由配有滑轮装置砝码拖动——这和高中物理课上做的实验类型简直如出一辙。

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It is found that the damping properties of the work-spindle system are largely affected by the type of main bearing and the mounting method of the pulley.

实验的测试结果表明工件-主轴系统的阻尼特性很大程度上受轴承结构型式及带轮安装方式的影响。

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