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| 岩层掌子面 | |||
| 岩壁 | |||
| 凿石斜面纹理; 琢石面; 粗石面; 粗琢成凹凸石面; 琢成蘑菇石面 | |||
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rock face : 10 phrases in 4 subjects |
| Bridge construction | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Hydroelectric power stations | 5 |
| Technology | 2 |
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