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| beam radiation; direct radiation; direct solar radiation | |||
| free-space propagation | |||
| leakage radiation (of an X-ray tube) | |||
| direct radiation (nonscattered) | |||
| rayonnement direct: 15 phrases in 5 subjects |
| Biology | 1 |
| Earth sciences | 4 |
| Health care | 6 |
| Technology | 1 |
| Радиоактивное излучение | 3 |