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本文根据吊笼井架提升机行走的不同可分为外和内两种,阐述了外吊笼与内吊笼在使用性能方面相比有着许多显著的优点。
In this paper, according to the cage derrick hoist walking can be divided into two kinds of outer and inner, expounded the outer cage and inner cage in the use of performance compared with many significant advantages.