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current chart |
水 流 图 : 30 phrases in 11 subjects |
Agriculture | 1 |
Desert science | 1 |
Economy | 1 |
Electronics | 1 |
Engineering geology | 2 |
Hydroelectric power stations | 5 |
Metallurgy | 3 |
Oil / petroleum | 4 |
Shipbuilding | 2 |
Technology | 9 |
Telecommunications | 1 |