增广向量法通过扩充输入、状态、输出等向量的维数及系统系数矩阵维数构造增广系统，使复杂问题简单化。
An augmenting system is designed to extend dimension of input, state, output and the coefficient matrixes in the method of augmenting vectors in order to predigest complicated problem.
然后引入作用较大的高阶广义节点形函数，扩充广义刚度矩阵，并求解新的整体平衡方程，得到更高精度的数值解。
Then, those useful generalized nodes are selected, and the generalized stiffness matrix is enlarged. A more accurate numerical solution can be obtained after the new equilibrium equations are solved.
矩阵扩充问题是当给定一个或多个子矩阵，在某种约束条件下构造矩阵的问题。
The problem of matrix extension is to construct matrices with a given matrix or a several given matrices as its sub-matrices under some constrained conditions.
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