英语语法分析

The structural model may be composed of 99 substructures each with 7000 degrees of freedom.

允许使用99个原级子结构，每个子结构的自由度数可达7000。

Such systems can be decomposed into a large linear main structure and one or more nonlinear substructures.

这类系统由模型参数已知的大的线性主结构与一个或多个非线性子结构组成。

The super element stiffness matrix and the stiffness contribution of substructures to the whole structure are developed.

推导了超级元刚度矩阵及子结构参与协同承载时对整体结构的刚度贡献。