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| оптический индекс | |||
| оптический показатель | |||
| optical index: 48 phrases in 9 subjects |
| Antennas and waveguides | 1 |
| Cables and cable production | 19 |
| Electronics | 4 |
| Makarov | 3 |
| Mass media | 10 |
| Nanotechnology | 1 |
| Physics | 1 |
| Technology | 4 |
| Telecommunications | 5 |
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