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| бета-радиоактивность | |||
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射现象 : 18 phrases in 8 subjects |
| Electronics | 3 |
| General | 1 |
| Medical | 1 |
| Microelectronics | 1 |
| Military | 1 |
| Physics | 2 |
| Seismology | 1 |
| Technology | 8 |
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