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| 地球观测卫星 | |||
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| 地球观测台卫星 | |||
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| 地球观测卫星 | |||
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earth observatory satellite : 7 phrases in 5 subjects |
| Aviation | 1 |
| Earth sciences | 2 |
| Electronics | 1 |
| Space | 2 |
| Technology | 1 |
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