读报
登录注册网站首页
 

OUR WORLD

Find our way around

作者:TEENS
Aa
  • -   
  •    +
我国北斗卫星规模超过美国GPS。

Most people have map apps on their phones that can show their location and guide them to where they want to go. But how do these apps know your location at any time or place? They find you by using satellite navigation (satnav) systems (卫星导航系统).
点击阅读全文
联系我们  |  诚聘英才  |  关于我们  |  版权声明
© i21st.cn   京ICP备2024066071号-1
 
选择报纸
选择报纸
关闭