中文摘要：

基于估计函数的最优性准则理论,给出一类最优无偏估计方程及其性质.得到的结果为寻找最优估计方程提供一个很好的理论方法.该方法可以提高估计的效率,在实际理论应用中具有重要意义.

英文摘要：

This paper gives a class of optimal unbiased estimating equations and their properties based on the theory of optimality criteria of estimating functions.The result provides a good theory and method to decide how to select optimal estimating equations.This method is applicable in practice,can use the method to increase the dfficieucy of estimates.