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阻挡层: 68 phrases in 21 subjects |
Agriculture | 1 |
Air defense | 2 |
Aviation | 3 |
Business | 1 |
Earth sciences | 1 |
Ecology | 1 |
Electronics | 10 |
Engineering geology | 1 |
General | 4 |
Geology | 1 |
Geophysics | 1 |
Information technology | 1 |
Mechanic engineering | 1 |
Metallurgy | 11 |
Oil / petroleum | 5 |
Physics | 1 |
Space | 2 |
Superconductivity | 1 |
Technology | 14 |
Telecommunications | 5 |
Textile industry | 1 |