《北斗》第二集 中国智慧闪耀北斗之路！揭秘研制北斗导航系统的惊心动魄瞬间【cctv纪录】
Synopsis
本期内容：以北斗工程决策立项、一号服务中国、二号服务亚太、三号服务全球的“三步走”战略为叙述线索，通过北斗系统背后鲜为 ...
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