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| mining yield; water yield | |||
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开采水量 : 27 phrases in 9 subjects |
| Animal husbandry | 1 |
| Desert science | 1 |
| Earth sciences | 3 |
| Ecology | 2 |
| Engineering geology | 6 |
| Hydroelectric power stations | 2 |
| Hydrology | 1 |
| Technology | 4 |
| Water resources | 7 |
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