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300万年仅误差1秒！北斗系统时间再创中国精度 _新闻频道_中华网

300万年仅误差1秒！北斗系统时间再创"中国精度"_新闻频道_中华网

china.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from china.com Daily Mail and Mail on Sunday newspapers.

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