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satellite tracking
| orbit determination program
| satellite tracking | |
| space | 卫星跟踪 |
| orbit determination program | |
| space | 轨道测定程序 |
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| 卫星跟踪 | |||
| 人卫跟踪 | |||
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satellite tracking orbit determination program : 115 phrases in 14 subjects |
| Air defense | 2 |
| Aviation | 8 |
| Business | 1 |
| Cartography | 1 |
| Communications | 1 |
| Earth sciences | 3 |
| Electronics | 14 |
| General | 2 |
| Geophysics | 3 |
| Information technology | 1 |
| Nautical | 1 |
| Space | 54 |
| Technology | 21 |
| United States | 3 |
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