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| rock stratification | |||
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岩层层理 : 12 phrases in 7 subjects |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Geology | 1 |
| Oil / petroleum | 2 |
| Technology | 4 |
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