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螺旋式楼梯 luóxuánshì lóutī
archit. screw stairs
bridg.constr. spiral staircase; spiral stairs
tech. staircase of helical type; turnpike stair; turnpike staircase; vis; helical staircase
螺旋式楼梯
: 10 phrases in 2 subjects
Architecture2
Technology8