The topographic analysis of grasshopper outbreak is the base to develop the prediction model for grasshopper outbreak.
草地蝗虫发生的地形分析是建立草地蝗虫发生预报模型的基础。
In the computer topographic analysis, the key of a research topographic factors piling is resolving the question of polygons piling.
在计算机地形分析中，研究地形多要素迭加分析的关键是解决多边形的迭加问题。
The thesis elaborates the method of using topographic map in land use analysis by applying an example of experiment.
本文通过一个试验实例，阐明利用地形图分析土地利用状况的方法。
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