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天线 开 关 : 53 phrases in 12 subjects |
Air defense | 14 |
Aviation | 2 |
Communications | 1 |
Electronics | 6 |
General | 4 |
Oil / petroleum | 2 |
Radio | 1 |
Remote sensing | 1 |
Shipbuilding | 3 |
Space | 6 |
Technology | 6 |
Telecommunications | 7 |