The overwhelming majority of nonlinear differential equations are not soluble analytically.绝大多数非线性微分方程是不能用解析方法求解的.The two - layer systems are by far the easier to treat analytically.双层体系更易于分析探讨.The distinction will be ma...
Purpose: Used in X - ray image intensifier , flasher, analytically reagent medical and special optical etc.用途: 红外光谱和闪烁器的光学材料, 用于特种玻璃、医药及用作分析试剂.The distinction will be made analytically more precise later when we consider...