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| fréquence de conversion | |||
| частота преобразования: 35 phrases in 8 subjects |
| Antennas and waveguides | 1 |
| Astronautics | 2 |
| Automated equipment | 1 |
| Electrical engineering | 1 |
| Electronics | 2 |
| Measuring instruments | 1 |
| Radio | 24 |
| Technology | 3 |
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