The moon's highs and lows are revealed in full color in a new topographic map produced by NASA's Lunar Reconnaissance Orbiter and released December 17.
NASA的月球勘测轨道飞行器制作的一幅全彩色地形图揭示了月球表面的高低。
2
Traditional construction methods firstly in the small scale topographic map, choose several feasible options, through field reconnaissance to confirm the optimize region.
传统的机场建设方法是首先在小比例尺地形图上选择几种可行方案，通过实地踏勘确定最佳区域。
3
Reconnaissance of the area as the first step, the locator, using available topographic maps and sometimes an airplane, explores the area.