“variace-covariance matrix”的概念、定义、翻译、参考文献-科学参考

单词	variace-covariance matrix
释义	variace-covariance matrix Encyclopedia 工学精度释 variace-covariance matrix方差-协方差矩阵随机变量的方差和协方差的集合。是以随机变量的方差为主对角元素，随机变量间的协方差为非主对角元素构成的一个对称方阵。
随便看	barrel-type distortion barrel vault Barremian Stage barren cropping bar resolution barretter Barrett esophagus barrier barrier capacitance barrier coastal coal-accumulating environment barrier coastal coal-accumulating model barrier cone barrier distribution barrier environment barrier film barrier-free computer technology barrier-free design barrier free reconstruction of historical and cultural relics protection buildings barrier function barrier function method barrier iceberg barrier island barrier island system barrier lake barrier layer

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。