Traditional construction methods firstly in the smallscale 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。
2
The algorithm based on C Tree can complete the polygon selection and combination operation in high efficiency for given large scale polygon map layer and small output scale.
VJ-23X of Lameth stared into the black depths of the three-dimensional, small-scalemap of the Galaxy and said, 'Are we ridiculous, I wonder in being so concerned about the matter?