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| ecological satellite (意大利阿莱尼亚喷气推进 (Alenia Spazo) 公司提出研制一颗搭载有大型 X 波段合成孔径雷达和光学敏感器的平台型卫星) | |||
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环境 生态 监测卫星 : 2 phrases in 1 subject |
| Space | 2 |
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