二元正态分布 [数] bivariate normal distribution ; two dimensional normal distribution

奇异二元正态分布 singular bivariate normal distribution

二维正态分布 two-dimension normal distribution ; bivariate normal distribution

二分常态机率模型 Binary probit model

二次常态分布 quadri-normal distribution

二项分布的常态逼近 normal approximation to binomial distribution