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| система ориентации | |||
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定向系 统 : 80 phrases in 11 subjects |
| Astronautics | 1 |
| Aviation | 2 |
| Drilling | 1 |
| Electronics | 2 |
| General | 16 |
| Medical | 1 |
| Military | 2 |
| Missiles | 1 |
| Nautical | 1 |
| Space | 7 |
| Technology | 46 |
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