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status system |
地 位系统: 41 phrases in 13 subjects |
Air defense | 2 |
Aviation | 12 |
Earth sciences | 8 |
Electronics | 4 |
General | 1 |
Geology | 1 |
Geophysics | 2 |
Hydroelectric power stations | 1 |
Name of organization | 1 |
Oil / petroleum | 1 |
Space | 5 |
Technology | 2 |
United Nations | 1 |