This new map provides contiguous topographic detail over a region approximately 311 miles by 249 miles (500 kilometers by 400 kilometers).
这张新地图给出了附近大约500千米乘400千米范围的地形。
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。
The complicated topographic features and varied weather bless the Shidian region with advantageous conditions of rich natural resources.
施甸境内复杂多变的地貌地形和立体气候，为各种丰富的自然资源提供了得天独厚的条件。
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