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| средняя поверхность (конгруэнции) | |||
| mean surface: 13 phrases in 9 subjects |
| Astronautics | 1 |
| Ecology | 1 |
| Energy industry | 2 |
| Geology | 1 |
| Makarov | 1 |
| Mathematics | 3 |
| Metrology | 1 |
| Mining | 1 |
| Navigation | 2 |
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