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本文提出用灰色关联分析法和灰色权距分析法来判定膨胀土的胀缩等级．并与模糊判定法、灰色聚类法的计算结果进行对比．说明灰色关联法和灰色权距法应用效果较好。
In this paper, gray relational analysis and gray right analysis are used to determine the expansion and contraction of expansive soil. And compared with fuzzy judgment method and gray clustering method. It shows that the gray correlation method and the gray distance method are effective.