文中还叙述了DDJ程序中数据管理的特点，主从关系转换的理论，总刚度阵拼装的技巧和方程右端项的形成办法。
The feature of DDJ data management , the theory of master-slave transformation , the technique of global stiffness matrix assemblage and the formation of external force vectors are described in the text .
关系转换理论