Principal Component Analysis PCA 主分量分析 ; 主成分分析
Methods Chemical pattern recognition was performed on the fruits of Ligustrum lucidum collected from various areas of China by PCA (principal component analysis) method.
方法应用主成分分析法(PCA)对来源于全国不同产地的女贞子进行了化学模式识别研究。
Method: Using fourier transform infrared spectrometer to record the characteristic spectra of eleven samples of Dendrobium, and to compare the spectra by PCA(principal component analysis).
方法：采用直接测定法测得了样品的FTIR，并结合主成分分析法进行排序比较。
We use PCA (Principal Component Analysis) to analyze 15 anthropogenic factors which may have influence on landscape. At last, population size and runoff factors are excluded.
采用主成分分析对15个人为因素进行分析，最终排除总人口数与径流量。
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