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спектр света : 20 phrases in 11 subjects |
| Analytical chemistry | 1 |
| Astronomy | 5 |
| Cinema equipment | 2 |
| Electronics | 2 |
| General | 1 |
| Metrology | 1 |
| Optics branch of physics | 1 |
| Polygraphy | 2 |
| Quantum electronics | 1 |
| Technology | 3 |
| Telephony | 1 |
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