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образование пары : 22 phrases in 9 subjects |
| Antennas and waveguides | 1 |
| Astronomy | 1 |
| Automated equipment | 1 |
| Chemistry | 1 |
| High energy physics | 2 |
| Physics | 3 |
| Radio | 2 |
| Technology | 1 |
| Радиоактивное излучение | 10 |
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