有槽滑车,滑轮,滑车组

sheave block的用法和样例：

例句

Large sheave mounted on sealed ball bearings for high efficiency.安装在密封滚珠轴承上的大型滑轮，有相当出色的效率。
Seize together,as of parallel ropes of a tackle in order to prevent running through the block.把滑车的平行绳子牢牢抓住，以免滑车通过滑轮转动。

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keep from ; stop from ; block from;

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单词超市第六十三期 block

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

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