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杨元喜院士讲北斗导航卫星(视频链接),共计约50分钟。
上:
https://www.iqiyi.com/v_19rrl0aoek.html
下:
https://www.iqiyi.com/v_19rrl0ani4.html#curid=466230800_c88022fb963af1cb8396fe34749de6bc
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