The UTM coordinate system is a grid-based method for specifying coordinates.

UTM 坐标系统使用基于网格的方法表示坐标。

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And the methods can be divided into portioning method, hierarchical method, density-based method, grid-based method and model-based method.

现有的聚类分析算法可划分为：划分方法、层次的方法、基于密度的方法、基于网格的方法和基于模型的方法。

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