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| 轨道太阳观测站 | |||
| 轨道太阳观测站 (美国太阳观测卫星); 轨道太阳观测卫星; 太阳观测〔人造〕卫星 | |||
| 轨道太阳观测台 | |||
| English thesaurus | |||
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| OSO | |||
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| OSO | |||
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orbiting solar observatory : 6 phrases in 5 subjects |
| Aviation | 1 |
| Cartography | 2 |
| Earth sciences | 1 |
| Electronics | 1 |
| United States | 1 |
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