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定向天线 : 94 phrases in 14 subjects |
Air defense | 16 |
Automobiles | 2 |
Aviation | 8 |
Electronics | 11 |
General | 5 |
Information technology | 1 |
Metallurgy | 1 |
Radio | 2 |
Rail transport | 1 |
Shipbuilding | 3 |
Space | 25 |
Technology | 12 |
Telecommunications | 6 |
United Nations | 1 |