First principal component的意思|示意

Then utilizing principal component analysis, the author analyzed the data of each period and concluded that the first and second principal component's accumulative proportion is more than 85 percent.

根据第一主成分和第二主成分的特征向量计算各时间段的第一主成分和第二主成分的指标值。

Time phase for the first complex principal component and time amplitude for the second one may use forecast of days of yearly snow lying.

第一复主分量的时间位相和第二复主分量的时间振幅峰值年可用于年积雪日数的预测。

The first principal component can denote the degree of soil salinity, and the second and third principal component can denote the degree of soil alkalinity.

第一主成分综合反映了区内土壤盐渍化程度，第二和第三主成分联合反映了土壤的碱性特征。

The results show temperature spatial variations have high consistency, the variance ratio contribution of the first principal component is about 75%.

结果表明：祁连山附近气温在空间上具有很好的一致性，年平均气温的第一主成分的方差贡献可占总方差的75%左右。

First-generation computers were characterized by the use of vacuum tubes as their principal electronic component.

第一代计算机的特色是使用真空管为其主要电子器件。

The results showed that in the first principal component, the contribution of arthropod community, phytophagous sub-community and predacious sub-community was 66.70%, 73.39% and 54.17%, respectively.

结果表明，葡萄园节肢动物群落、植食类亚群落、捕食类亚群落特征向量矩阵中第1主分量综合指标贡献率依次为66·70%、73·39%和54·17%。