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本文提出用灰色关联分析方法来分析地下水位动态变化的影响因素的主次关系，以实例介绍该计算方法与步骤，并与常用的数理统计法计算结果进行对比，可见灰色关联法效果较好。
In this paper, we propose the gray relational analysis method to analyze the primary and secondary relationship of the influencing factors of groundwater level dynamic change. The calculation method and steps are introduced by examples. Compared with the commonly used mathematical statistics method, the gray correlation method is better.