单元矩阵是一个对角线为非零元素，其它元素为零的方形矩阵。
... 单元结构 cellular construction 单元矩阵 cell matrix 单元空间模拟（语言） cell space simulation ...
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选定平面三角形基函数作为型函数，确定了单元方程和单元矩阵；
The triangle base function was selected as shape function, and cell equation and cell matrix were constructed.
在单元矩阵的计算过程中将解析方法与数值积分相结合，大大提高了计算精度。
The stiffness matrices and mass matrices of the annular elements are obtained by combining analytical and numerical methods.
针对各种不同的结构连接形式和振动波形，分别推导了各种节点单元矩阵的表达式。
The joint element matrix equations were developed for various structural configurations and wave types.
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