Principal component analysis and stepwise regression were employed to characterize availability of heavy metals, microbial responses and their effect factors in the studied soil.
利用主成分和逐步回归分析了影响土壤重金属的有效性及其微生物学效应的因素。
Based on the stepwise regression analysis and the principal component analysis, the soft-sensing method is presented to predict the quality of Chinese herb.
基于逐步回归分析与主成分分析，提出了用于中药质量预测的软测量方法。
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