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| система частотной модуляции | |||
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调频制 : 85 phrases in 10 subjects |
| Astronautics | 1 |
| Automated equipment | 1 |
| Aviation | 1 |
| Education | 1 |
| Electricity | 1 |
| Electronics | 8 |
| General | 19 |
| Military | 2 |
| Radio | 4 |
| Technology | 47 |
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