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建议型系统 | |||
顾问制 |
advisory system : 41 phrases in 14 subjects |
Air defense | 1 |
Aviation | 21 |
China | 2 |
Computer networks | 2 |
Earth sciences | 2 |
Economy | 2 |
Electronics | 1 |
Geophysics | 1 |
International trade | 1 |
Name of organization | 2 |
Navigation | 1 |
Space | 3 |
United Nations | 1 |
United States | 1 |