 |
| |||
| background radiation; ambient radiation | |||
| излучение в окружающей среде: 3 phrases in 3 subjects |
| General | 1 |
| Nuclear physics | 1 |
| Technology | 1 |
|
| |||
| background radiation; ambient radiation | |||
| излучение в окружающей среде: 3 phrases in 3 subjects |
| General | 1 |
| Nuclear physics | 1 |
| Technology | 1 |