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| investigation; research | |||
| exploratory activity (Sergei Aprelikov) | |||
| исследовательская деятельность: 28 phrases in 14 subjects |
| American usage, not spelling | 1 |
| Cables and cable production | 1 |
| Ecology | 1 |
| Economy | 1 |
| Education | 4 |
| Energy industry | 2 |
| General | 6 |
| Makarov | 2 |
| Mathematics | 1 |
| Medical | 3 |
| Perfume | 1 |
| Research and development | 1 |
| Scientific | 3 |
| Software | 1 |