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我国成功发射第三十九、四十颗北斗导航卫星
source link: https://tech.sina.com.cn/d/s/2018-10-15/doc-ihmhafir7936782.shtml
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来源：中国北斗卫星导航系统2018年10月15日12时23分，我国在西昌卫星发射中心用长征三号乙运载火箭（及远征一号上面级），以“一箭双星”方式成功发射第三十九、四十颗北斗导航卫星。这两颗卫星属于中圆地球轨道卫星，是我国北斗三号系统第十五、
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