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间层水 : 37 phrases in 10 subjects |
| Bridge construction | 1 |
| Desert science | 2 |
| Drilling | 2 |
| Engineering geology | 11 |
| General | 1 |
| Geophysics | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Technology | 13 |
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