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space control : 82 phrases in 13 subjects |
Air defense | 3 |
Artificial intelligence | 1 |
Aviation | 10 |
Earth sciences | 2 |
Electronics | 12 |
General | 4 |
Information technology | 1 |
Nautical | 2 |
Refrigeration | 3 |
Space | 35 |
Technology | 1 |
United Nations | 1 |
United States | 7 |