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| 低轨道卫星; 近地卫星 | |||
| 低轨卫星; 低空卫星 | |||
| 低高度卫星 | |||
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| 低高度卫星 | |||
| 低空卫星 | |||
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low altitude satellite : 3 phrases in 1 subject |
| Space | 3 |
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