variances变通variancen.不一致；变化；[数]方差variance compensation technique方差补偿技术variance of the Poisson process泊松过程变量variance-ratio transformation方差比变换variance for stratified sampling分层抽样方差Variance of difference histogram差分直方图方差Variance homogeneous measurement方差一致性测度variance and covariance component方差和协方差variance decomposition proportion方差分解比variance matrix of estimated error估计误差方差阵variance of timing estimation error估计误差的方差