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| taux de fréquence | |||
| коэффициент частоты: 12 phrases in 7 subjects |
| Antennas and waveguides | 1 |
| Automated equipment | 4 |
| Electronics | 1 |
| Mining | 1 |
| Oil and gas technology | 2 |
| Radio | 2 |
| Technology | 1 |
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