According to the physical and chemical indexes of different periods,different storage containers and different storage sites,a two overall T test was used to show that there were significant differences in physical and chemical indexes of liquor body in different detection sites.Correlation analysis of wine storage in different storage methods by Spearman correlation coefficient.By using the principal component analysis method,the comprehensive evaluation index system of the quality of the wine body was constructed,and the classification model of the detection location based on the comprehensive evaluation was established by using the index system.The detection sites were classified,and the results showed that the detection sites were divided into four grades.
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