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normal discharge |
常流量 : 28 phrases in 12 subjects |
Agriculture | 1 |
Automobiles | 1 |
Computer networks | 1 |
Ecology | 1 |
Electronics | 2 |
Engineering geology | 1 |
Hydroelectric power stations | 1 |
Information technology | 1 |
Rail transport | 1 |
Technology | 16 |
United Nations | 1 |
Wind Energy | 1 |