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тепловой эффект : 16 phrases in 9 subjects |
| Antennas and waveguides | 1 |
| Astronautics | 1 |
| Chemistry | 1 |
| Geology | 1 |
| Medical appliances | 1 |
| Metallurgy | 1 |
| Military | 1 |
| Physics | 5 |
| Technology | 4 |
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