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北斗三号系统全部核心技术已攻克
source link: http://tech.sina.com.cn/d/s/2017-09-21/doc-ifymeswc8814530.shtml
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科技日报北京9月20日电 （记者付毅飞）记者20日从中国航天科技集团公司获悉，我国北斗三号全球定位系统所有核心技术都已攻克，产品已经进入研制生产环节。35颗北斗卫星全球组网计划预计在2020年完成。中国卫星导航系统管理办公室主任冉
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