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| 无线电传播 | |||
| 无线电波传播 | |||
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radio propagation : 37 phrases in 9 subjects |
| Air defense | 2 |
| Aviation | 2 |
| Communications | 1 |
| Earth sciences | 3 |
| Electronics | 5 |
| General | 4 |
| Space | 6 |
| Technology | 12 |
| Telecommunications | 2 |
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