To study the change of particle size distribution, a general dynamic equation is established based on the moment method and the assumption of a reasonable log-normal size distribution.
通过对颗粒的分布作出一个合理的对数正态分布假设，运用矩方法求解颗粒的通用动力学方程，来研究颗粒的尺寸分布情况。
First, the problem of scattering by arbitrarily shaped objects is studied by the method of moment (MoM), when a thin wire antenna exists, with the general matrix equation given.
介绍了利用矩量法求解线面复杂结构目标的电磁散射问题，并给出了一般的矩阵方程。
It needs more nonlinear equations to use the general moment method for parameter estimation of Gaussian mixtures. The improved moment method changes the nonlinear equations into linear equations.
用一般矩方法进行混合高斯随机敬的参数估计需要计算多个非线性方程，改进后的矩方法把非线性方程化成了线性方程。
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