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| 盘梯 | |||
| 螺旋梯; 螺旋式楼梯 | |||
| 转梯 | |||
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| 螺旋式楼梯; 盘梯; 盘旋楼梯; 中柱螺旋式楼梯 (中柱支承悬臂踏步); 旋梯 | |||
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spiral stairs : 7 phrases in 2 subjects |
| Architecture | 1 |
| Technology | 6 |
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