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降水 曲 线 : 41 phrases in 9 subjects |
Architecture | 2 |
Bridge construction | 4 |
Desert science | 1 |
Ecology | 1 |
Engineering geology | 4 |
Hydroelectric power stations | 3 |
Metallurgy | 1 |
Oceanography & oceanology | 1 |
Technology | 24 |