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1·The principal component analysis implements the column-wise compression, using the correlation between attributes.

主成分分析使用属性之间的相关性实现按列压缩。

2·Methane is a principal component of natural gas.

天然气的主要成分是甲烷。

3·Financial risk; Precaution index System; Principal Component Analysis.

金融风险；预警指标体系；主成分分析法。

4·Principal Component Analysis (PCA) is a common method in face recognition.

主成分分析(PCA)是自动人脸识别的常用方法。

5·As the principal component in glass, silicon dioxide was used as early as 5000 BC.

作为玻璃的主要成分，二氧化硅早在公元前5000年就被使用。

6·Methods of principal component analysis, grey incidence analysis were employed.

研究方法：主成分分析法、灰关联分析。

7·Henan Province; grain production; dynamic variety; Principal Component Analysis.

河南省；粮食生产动态变化；主成分分析。

8·The principal component analysis is a kind of effective data compression method.

主成分分析法是一种有效的数据压缩方法。

9·Principal component analysis is a linear method, but the most data are nonlinear.

线性主成分分析是一种线性分析方法，而数据通常是非线性的。

10·Principal component analysis was used to derive soil fertility variation factors.

运用主成分分析选取土壤肥力变异因子。