用于探测金星的麦哲伦号绘制完成了金星表面98%的地形图，它传回的数据表明金星的大部分地区都被火山物质所覆盖，其间点缀着一些陨石坑。
Magellan mapped more than 98 percent of the surface of Venus, and revealed the planet to be mostly covered by volcanic materials, dotted with a few impact craters.
三维表现系统，是建立在计算机图形绘制技术的基础上，对地球表面的海量地形和城市中的大规模建筑群进行实时绘制的系统。
A 3D rendering system is such a system that draws the massive terrain and cities on the earth based on computer graphic technology.
应用推荐