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| связь в оптическом диапазоне | |||
| оптическая связь | |||
| light communication: 9 phrases in 6 subjects |
| Electronics | 1 |
| Firefighting and fire-control systems | 1 |
| Internet | 1 |
| Military | 2 |
| Security systems | 3 |
| Telecommunications | 1 |
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