... structural steel 结构钢 structural stiffness matrix 结构刚度矩阵 structural stillstand 构造宁静期 ...
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simplified structural stiffness matrix 结构简约刚度矩阵
structural stiffness assembly matrix 结构刚度组装矩阵
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The structural stiffness matrix is the function of frequency because that the impedance function of the pile foundation changes with its frequency.
由于桩基础的阻抗函数随频率变化，所以结构的刚度矩阵也是频率的函数。
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