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уровень излучения : 17 phrases in 8 subjects |
| Astronautics | 2 |
| GOST | 2 |
| High energy physics | 1 |
| Medical appliances | 1 |
| Nuclear physics | 3 |
| Radio | 4 |
| Technology | 1 |
| Радиоактивное излучение | 3 |
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