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| 射电噪声通量 | |||
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radio noise : 42 phrases in 10 subjects |
| Air defense | 3 |
| Automobiles | 1 |
| Aviation | 3 |
| Electronics | 6 |
| Geophysics | 1 |
| Information technology | 3 |
| Radio | 1 |
| Space | 8 |
| Technology | 15 |
| Telecommunications | 1 |
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