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| double-curvature arch; double curved arch; two-way curved arch | |||
| double curvature arch | |||
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双 曲拱 : 34 phrases in 7 subjects |
| Bridge construction | 8 |
| Engineering geology | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Hydroelectric power stations | 4 |
| Project management | 1 |
| Technology | 16 |
| Water resources | 1 |
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