cat ladder
基本释义:
竖梯,便梯,"猫梯"
网络释义
1)cat ladder,竖梯;便梯;"猫梯"
2)ladder raise,竖梯
3)auxiliary stair,便梯
4)step ladder,梯
5)beam raise,侧靠竖梯
6)elevator hoistway,电梯竖井
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