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| 排水 区: 40 phrases in 11 subjects |
| Agriculture | 1 |
| Desert science | 2 |
| Earth sciences | 1 |
| Ecology | 3 |
| Electronics | 1 |
| Engineering geology | 5 |
| General | 2 |
| Hydroelectric power stations | 3 |
| Oil / petroleum | 1 |
| Technology | 18 |
| Water resources | 3 |
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