In general cases, state equation for the multiple cascaded networks can be established with the method of state equation, but it is very difficult to resolve it.
一般说，利用状态方程法是可以为多级级联网络建立状态方程的，但求解状态方程是困难的。
The State-Space method is applied to compute the differential equation of the elastodynamics of mechanism.
应用基于状态空间法的闭式算法对机构弹性动力学微分方程进行求解。
The concept of the structural performance safety index is put forward and its calculation method is derived based on the structural deformation limit state equation.
提出了结构性能安全指数的概念，并以结构的变形极限状态方程为基础得到了结构设计性能安全指数的计算方法和结构性能等级的划分标准。
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