... chain growth, chain propagation 链增长 chain hoist, chain block 链式起重机 chain link; chain iron 链环 ...
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我确实在地面装好四面墙的三个框架，再用链式起重机把它们吊起来。
I did frame three of my four walls on the ground, then raised them with the chain hoist.
这种设备通常称为链式起重机，它在工厂里是用来提起重物的。
Often called a chain hoist, this device is used to lift heavy objects in factories.
一架链式起重机可以帮你将一节沉重绿橡树的树干，谷仓墙面和松木地板举到这棵之前并无人居住的肯塔基咖啡树上。
A chain hoist helped raise a heavy pile of green oak, barn siding and pine flooring up into this formerly unoccupied Kentucky coffee tree.
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