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| first frequency; lowest frequency | |||
| первая частота: 22 phrases in 9 subjects |
| Aerohydrodynamics | 1 |
| Astronautics | 1 |
| Aviation | 3 |
| Building structures | 1 |
| General | 1 |
| Helicopters | 2 |
| Makarov | 2 |
| Mass media | 7 |
| Technology | 4 |
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