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测地轨道卫星 : 28 phrases in 11 subjects |
| Air defense | 1 |
| Cartography | 2 |
| Earth sciences | 7 |
| Electronics | 3 |
| Geology | 2 |
| Geophysics | 2 |
| Military | 1 |
| Oil / petroleum | 1 |
| Space | 7 |
| Technology | 1 |
| United States | 1 |
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