The general fuzzy clustering method used to classify the flow units will cause the mismatch of the clustering parameters with each other.

单纯应用聚类分析划分流动单元容易出现聚类指标的优劣交叉现象，从而给流动单元的分类带来困难。

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This mismatch of need and supply exacerbates the overstretch experiences by many units, which are often turning away mothers in labour, he said.

BBC: David Cameron