variances变通variancen.不一致；变化；[数]方差variance of probability distribution概率分布的方差variance within primary sample units初级抽样单位内的方差variance-covariance propagation law方差-协方差传播律variance between primary sample units初级抽样单位间的方差variance-optimal martingale measure方差最优鞅测度variance of a probability distribution概率分布的方差variance volume interpretation technology方差体解释技术Variance-mixture of normal distribution方差混合正态分布