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сигнал передачи : 67 phrases in 10 subjects |
| Astronautics | 1 |
| Aviation | 1 |
| Biology | 4 |
| Electronics | 14 |
| General | 20 |
| Information technology | 2 |
| Metrology | 2 |
| Technology | 21 |
| Telecommunications | 1 |
| Television | 1 |
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