Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子的几个性质，并由此证得用多项式致逼近连续函数的结论。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析梯度辨识算法跟踪时的缺，提出新的基于局部多项式逼近的参数梯度估计算法。

In this paper, the mathematical model of the reltion between water saturation vapor pressure and saturated temperature is established in the form of monoacidic polynomials.

提出元多项式形式的水蒸气饱和压力与饱和温度关的数学模型，进行牛肉冻结过程的计算机模拟，在此基础上进行牛肉冻结过程中干耗量的数值计算。

According to the nature of two-dimensional biharmonic equations,this paper obtains a polynomial solution of the biharmonic equation for stress function by means of the MATHEMATICA software.

根据二维双调和方程的特并借助于MATHEMATICA软件,得到应力函数双调和方程的多项式解答。