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23 juin 2020 - 2020 中国提前半年完成北斗全球系统星座部署

Description:

#2020.6.23

中国在西昌卫星发射中心成功发射第55颗北斗导航卫星，提前【半年】完成北斗全球系统星座部署。

北斗卫星导航系统：中国自主研发的全球卫星导航系统，可以在全球范国内为人们提供全天候高精度的定位与授时服务

Ajouté au bande de temps:

人教版高中历史|Chinese students' PEP SENIOR HIGH HISTORY TEXTBOOKS

ByGUZI
il y a 8 mois
4
0
3489

Date:

23 juin 2020
Maintenaint
~ Il y a 5 ans
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