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词汇
dead pulley
释义
dead pulley
基本
例句
惰轮,空转轮,中心轮,定滑轮
The fixed pulley only changes the direction of the force, it cannot help reduce effort.
定滑轮并不能省力,只是改变了力的方向。
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更新时间:2026/4/30 9:22:06