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| характеристики режима чистоты; чистота внешней среды | |||
| contamination environment: 12 phrases in 10 subjects |
| Astronautics | 2 |
| Diplomacy | 1 |
| Energy industry | 1 |
| Geography | 1 |
| Medical | 1 |
| Military | 2 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 1 |
| Politics | 1 |
| Sakhalin | 1 |
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