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| скрытое изображение: 27 phrases in 8 subjects |
| Antennas and waveguides | 1 |
| Chemistry | 3 |
| Cinema equipment | 7 |
| Cinematography | 1 |
| Optics branch of physics | 5 |
| Photography | 3 |
| Quantum electronics | 1 |
| Technology | 6 |