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无线电信号 | |||
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无线电信号 |
radio- signal : 66 phrases in 13 subjects |
Air defense | 5 |
Artificial intelligence | 1 |
Automobiles | 1 |
Aviation | 4 |
Communications | 8 |
Earth sciences | 1 |
Electronics | 5 |
General | 2 |
Oil / petroleum | 2 |
Shipbuilding | 1 |
Space | 4 |
Technology | 29 |
Telecommunications | 3 |