stillness matrix

• 刚度矩阵

stillness matrix的用法和样例：

例句

1. The plastic elemental stiffness matrix was derived by plastic-hinge method.
   然后用塑性铰法推导了单元的塑性刚度矩阵。
2. The stiffness matrix of the assemblage of elements is then generated in the same way as in the case of frames.
   然后，按框架情况的相同方法建立诸单元组合体的刚度矩阵。