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radiation background : 84 phrases in 20 subjects |
Astronautics | 2 |
Astronomy | 6 |
Astrophysics | 1 |
Biology | 1 |
Business style | 1 |
Construction | 2 |
Ecology | 5 |
Environment | 1 |
Geography | 1 |
Makarov | 17 |
Medical | 6 |
Medical appliances | 3 |
Military | 11 |
Nanotechnology | 3 |
Nuclear physics | 6 |
Physics | 4 |
Shipbuilding | 1 |
Space | 3 |
Technology | 9 |
Радиоактивное излучение | 1 |