采用特征向量法求其基本矩阵解。
By using the characteristic vector method, the fundamental matrix solution is obtained.
采用积分变换和传递矩阵方法，求解了成层土在内部环形荷载作用下的基本解；
The fundamental solutions for displacements and stress components of the layered soil due to unit internal ring loading are first derived with integral transforms and the transfer matrix method.
INA法的基本思想是通过选择预补偿器使原系统的逆前向传递函数矩阵成为对角优势阵，从而实现各输入输出变量之间的基本解耦。
The INA's basic idea is that, through selecting pro-(compensator, ) inverse pro-transitive function matrix of previous system can be changed into diagonal preponderance matrix.
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