convariancecov(covariance)covariance matrixkovarianz covariance方差-协方差矩阵: variance covariance matrix; variance-covariance matrix表型协方差: phenotypic covariance抽样协方差: sampling covariance多元协方差: multiple covariance多重协方差: multiple covariance下载手机词典可随时随地查词查翻译