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| réglage de la fréquence | |||
| réglage de fréquence | |||
| регулирование частоты: 13 phrases in 6 subjects |
| Automated equipment | 1 |
| Aviation | 3 |
| Electronics | 4 |
| Energy system | 1 |
| High energy physics | 1 |
| Hydraulic engineering | 3 |
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