Public Timelines

For companies For educational institutions For teachers For students Dashboard

For educational institutions For teachers For students Dashboard

FAQ

Create a timeline

Public timelines

About & Feedback Terms Privacy FAQ

Dashboard Pricing

Donate

jun 23, 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

Added to timeline:

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

By GUZI

10 months ago

4

0

3970

Date:

jun 23, 2020

Now

~ 6 years and 2 months ago

About & Feedback Terms Privacy FAQ

Pricing Dashboard

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL