GNSS such as GPS and Galileo (under development by the EU) are primarily intended for navigation and location, but also provide a global system for extremely accurate time and frequency information.

 
  • 利用全球巡航卫星系统(GNSS),如GPS或伽利略(由欧盟开发)系统,主要用于导航和定位,也可以提供极其准确的全球时间频率信息。
今日热词
目录 附录 查词历史