方法采用专家咨询打分法、离散趋势法、主成分分析法和聚类分析法进行分析。
Methods The methods of analysis were used by expert consulting graded approach, discrete tendency, principal component analysis and cluster analysis.
研究方法：主成分法，聚类分析法，比较法，模型法。
Methods of principle component analysis, clustering analysis, comparative analysis and modeling were employed.
主成分分析法和聚类分析法是藠头无机元素含量分析的有效方法。
The principal component analysis and cluster analysis could be perfectly applied in data processing in inorganic elements.
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