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分 配系数 : 62 phrases in 19 subjects |
Agriculture | 1 |
Air defense | 1 |
Automobiles | 1 |
Aviation | 4 |
Business | 2 |
Earth sciences | 1 |
Economy | 1 |
Electronics | 8 |
Engineering geology | 2 |
Environment | 1 |
Information technology | 1 |
Metallurgy | 6 |
Nautical | 1 |
Oil / petroleum | 5 |
Space | 7 |
Statistics | 1 |
Technology | 16 |
Telecommunications | 1 |
Water resources | 2 |