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渗透层 : 137 phrases in 16 subjects |
| Agriculture | 2 |
| Architecture | 1 |
| Bridge construction | 3 |
| Chemistry | 1 |
| Desert science | 1 |
| Drilling | 18 |
| Earth sciences | 3 |
| Engineering geology | 7 |
| General | 1 |
| Geology | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 6 |
| Mining | 4 |
| Oil / petroleum | 43 |
| Technology | 43 |
| Water resources | 1 |
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