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| нижняя частота | |||
| пониженная частота | |||
| низкая частота | |||
| малая частота; низкочастотность | |||
| 低频率: 45 phrases in 9 subjects |
| Antennas and waveguides | 2 |
| Aviation | 2 |
| Electronics | 14 |
| General | 5 |
| Military | 2 |
| Nuclear and fusion power | 1 |
| Radio | 2 |
| Technology | 16 |
| Telecommunications | 1 |
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