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courant permanent : 12 phrases in 8 subjects |
| Antennas and waveguides | 1 |
| Electric machinery | 1 |
| Electronics | 1 |
| Energy industry | 3 |
| Mechanic engineering | 3 |
| Technology | 1 |
| Transformers | 1 |
| Радиоактивное излучение | 1 |
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