辐射强度: 83 phrases in 16 subjects |
Agriculture | 2 |
Air defense | 2 |
Aviation | 11 |
Earth sciences | 3 |
Ecology | 1 |
Electronics | 5 |
Engineering geology | 1 |
General | 5 |
Metallurgy | 4 |
Nuclear physics | 1 |
Oil / petroleum | 5 |
Refrigeration | 3 |
Space | 10 |
Technology | 27 |
Telecommunications | 1 |
Wind Energy | 2 |