数据质量控制是良好的数字地形图质量的重要保证。
Data quality controlling is a important index for topographic digital map.
本方法选用了简单实用的带状方格网式数字地形模型。
A simple and practical digital topographic model of the band-formed grid method has been chosen.
在此基础上，给出了三维数字地形交互显示的两种主要方式及实现方法。
Moreover, we also discussed the main two methods of drawing and displaying of it.
在此基础上，给出了三维数字地形交互显示的两种主要方式及实现方法。
Moreover, we also discussed the main two methods of drawing and displaying of it.
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