This paper, by using the principal component analysis method, establishes a mathematical model for overall evaluating the water pollution control engineering.
本文应用主分量分析法建立一个综合评价水污染控制工程的数学模型。
The anomalous characteristic of the swarm activity is analyzed using the precursor swarm distinguishing equation constructed by the principal component analysis method.
应用主成分分析方法构建了前兆震群判别方程，对震群活动的异常特征进行了分析。
Applying the principal component analysis method (PCA) to these variables, we compile a single composite index (G-Index) to rank Chinese listed firms' corporate governance levels.
基于这个变量体系，我们运用主元因素分析法编制了一个可反映上市公司治理水平的综合指标——G指标。
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