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容许限 : 115 phrases in 25 subjects |
Agriculture | 2 |
Architecture | 2 |
Aviation | 1 |
Business | 7 |
Chemistry | 3 |
Commerce | 1 |
Compressors | 1 |
Earth sciences | 5 |
Ecology | 3 |
Economy | 1 |
Electronics | 4 |
Engineering geology | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 1 |
Hydroelectric power stations | 1 |
Mathematics | 5 |
Medical | 1 |
Metallurgy | 4 |
Oil / petroleum | 7 |
Space | 4 |
Statistics | 2 |
Technology | 46 |
Textile industry | 4 |
Water resources | 3 |
Wind Energy | 5 |