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| densité spectrale d'énergie (энергии) | |||
| densité spectrale; répartition spectrale | |||
| спектральная плотность: 15 phrases in 8 subjects |
| Astronautics | 1 |
| Mathematics | 1 |
| Medical appliances | 1 |
| Meteorology | 1 |
| Physics | 3 |
| Radio | 3 |
| Technology | 2 |
| Дозиметрия | 3 |
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