英文名：Principal Component Regression，主成分分析也称主分量分析，旨在利用降维的思想，把多指标转化为少数几个综合指标。
本文用主分量分析法建立了雷云等强对流天气的综合判别式。
This paper presents a comprehensive recognition formula of hailstorm cloud by using principal component analysis.
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。
This paper, by using the principal component analysis method, establishes a mathematical model for overall evaluating the water pollution control engineering.
首先利用主分量分析法和人脸重心确定人脸对称轴，再结合山谷法进行眼睛候选点的提取和验证。
The principle component analysis and face bray center are used to detect the symmetry axis, and the valley method is applied to detect and verify the eye candidates.
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