全球定位系统 / Global Positioning System(GPS)(第3部分:通讯、导航...
参考译文:月球的轨道大约是地球静止轨道的9倍。(在SVG文件中,将鼠标悬停在轨道或其标签上以突出显示它;点击此处下载文章。) Following the United States' deployment of GPS, other countries have also developed their own satellite navigation systems. These systems include: 参考译文:继美国部署GPS之后,其他国家...