系统聚类分析法对质量进行归类。
Hierarchical cluster analysis was used to evaluate the quality.
应用主成分分析法、系统聚类分析法将药材分成两类，并计算相似度。
Results Principal components analysis and clustering analysis were used in the identification of the samples and the similitude was calculated by computer.
确定零件组的参考模式是零件分类系统的关键问题。采用模糊聚类分析法，解决了这一难题。
To define the part cluster reference patterns is the key in part classification system. The problem has been solved successfully by using fuzzy cluster analysis.
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