The basic concept and theory about AC=BD model, the construction of the operators of C and D, the theory of C-D integral system are introduced. In addition, this dissertation introduces the methods of transforming NPDE into standard type advanced by Reid.

• 给出了“AC=BD”模式的基本概念及理论初步，C、D算子的构造方法以及C-D可积系统理论，介绍了Reid将线性偏微分方程化为标准型的方法。