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反 射系数 : 140 phrases in 18 subjects |
Air defense | 6 |
Architecture | 2 |
Artificial intelligence | 1 |
Aviation | 2 |
Construction | 1 |
Earth sciences | 1 |
Electric machinery | 1 |
Electronics | 22 |
Engineering geology | 1 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 7 |
Geophysics | 5 |
Information technology | 1 |
Metallurgy | 8 |
Oil / petroleum | 8 |
Space | 6 |
Technology | 63 |
Wood processing | 3 |