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| regular intervals | |||
| равные интервалы: 21 phrases in 12 subjects |
| Aviation | 1 |
| Cartography | 1 |
| Electronics | 1 |
| Geology | 1 |
| Mass media | 5 |
| Mathematics | 4 |
| Metrology | 2 |
| Mining | 1 |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Technology | 1 |
| Telecommunications | 1 |
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