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调谐 天 线: 51 phrases in 14 subjects |
Air defense | 11 |
Automobiles | 2 |
Aviation | 2 |
Communications | 1 |
Construction | 1 |
Electronics | 8 |
General | 3 |
Geophysics | 1 |
Industry | 1 |
Information technology | 2 |
Shipbuilding | 5 |
Space | 1 |
Technology | 7 |
Telecommunications | 6 |