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11. | satellite orbit |
| 卫星轨道 |
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12. | injection orbit |
| 注入轨道 |
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13. | principal orbit |
| 主轨道 |
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14. | orbit photography |
| 轨道摄影 |
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15. | orbit lifetime |
| 轨道寿命 |
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16. | collision orbit |
| 碰撞轨道 |
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17. | preliminary orbit |
| 初始轨道 |
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18. | orbit displacement |
| 轨道偏移 |
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19. | geocentric orbit |
| 地心轨道 |
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20. | orbit resonance |
| 轨道共振 |
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