Regions consist of equal region and nub region and equal region can be divided with the methods of Taisen triangle, trend surface, clustering and so on;

均质区域可用泰森三角形、趋势面、聚类分析等方法进行区划；

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Regions consist of equal region and nub region and equal region can be divided with the methods of Taisen triangle, trend surface, clustering and so on;

均质区域可用泰森三角形、趋势面、聚类分析等方法进行区划；

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