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单词 differential pulley
释义

differential pulley

noun

: a tackle consisting of a fixed upper double block with pulleys of different diameters fixed together on the same axis, a movable single lower pulley that carries the load, and an endless cable or chain that passes around all the pulleys and hangs in a loop for operating the mechanism which is used to achieve a very high mechanical advantage
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更新时间:2024/12/23 19:49:52