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地下水流 : 171 phrases in 13 subjects |
Agriculture | 2 |
Bridge construction | 1 |
Desert science | 7 |
Earth sciences | 3 |
Ecology | 3 |
Engineering geology | 32 |
General | 1 |
Hydroelectric power stations | 3 |
Mining | 1 |
Oil / petroleum | 2 |
Refrigeration | 1 |
Technology | 110 |
Water resources | 5 |