conditional covariance matrixconditionalcovariancematrix条件: condition; term; factor矩阵: matrix; array协方差矩阵: covariance matrix; variance-covariancematrix方差-协方差矩阵: variance covariance matrix; variance-covariance matrix纯量协方差矩阵: scalar covariance matrix下载手机词典可随时随地查词查翻译