将广义渐近正态法写成迭代形式，以逐个迭代实现样本量的分配，获得精确等样本或给定比例样本设计。该方法具有可逆性和还原性：由所得样本量逆运算可复得设计参数，在无终检时还原为经典方法。其功效高于简化等样本设计 The generalized asymptotic normal method is written in an iterative form, and the sample size distribution is performed on an iterative basis to obtain an exact equal sample or a given proportional sample design. The method is reversible and reducible: the design parameters can be recovered from the inverse of the obtained sample size, and can be restored to the classical method when there is no final inspection. Its power is higher than the simplified sample design