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BeiDou - Wikipedia
北斗卫星导航系统 - 维基百科,自由的百科全书
System - BeiDou
BeiDou: China’s GPS Challenger Takes Its Place on the World Stage
北斗卫星导航系统
BeiDou
BeiDou Navigation Satellite System: Three generations of …
北斗卫星导航系统(中国自行研制的全球 ... - 百度百科
China’s GPS rival Beidou is now fully operational after final satellite ...
China Launches Beidou, Its Own Version of GPS - IEEE Spectrum