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北斗“收官之星”完成首次变轨

2019-06-24 17:05     来源:快3_一分快3-欢迎您
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吕炳宏 科技日报记者 付毅飞

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西安卫星测控中心渭南测控站正在组织对该站星间链路管理设备开展维护工作。(王松松摄)

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