·2,447,543篇论文数据，部分数据来源于NoteExpress
Vinegar samples were divided into two main groups by cluster analysis and principal component analysis. Each main group was discriminated according to different brands.
聚类分析和主成分分析都将食醋样品分为两大类，每个大类又将食醋样品按不同品牌分开。
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