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| |||
| cosmical noise; radio noise | |||
| cosmic noise | |||
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射 电噪声 : 14 phrases in 8 subjects |
| Air defense | 1 |
| Electronics | 2 |
| General | 1 |
| Information technology | 1 |
| Metallurgy | 1 |
| Space | 3 |
| Technology | 3 |
| Telecommunications | 2 |
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