Methods Based on statistical data of Shaanxi Province from 1999 to 2004, the grey correlation degree analysis is used.
方法基于陕西省1999—2004年的统计数据，运用灰色系统理论中的相对关联度分析方法。
Methods: Correlation analysis, Grey incidence analysis were used for the quality evaluation of Fructus Arctii in different places.
方法：使用相关分析、灰色关联分析对不同产地牛蒡子做出质量评价。
Methods: Correlation analysis, Grey incidence analysis were used for the quality evaluation of Fructus Arctii in different places.
方法：使用相关分析、灰色关联分析对不同产地牛蒡子做出质量评价。
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