...调制；采样率；对角线元素 [gap=1268]Key words： Fourier matrix；multi -channel modulation；sample rate；diagonal element ...
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diagonal element rule 称之为对角线规则
matrix the diagonal element ta 矩阵对角元
element of minor diagonal 次对角元
semi-diagonal matrix of finite element 有限元准对角线矩阵
It is proposed a new topological method of adjacent matrix of esters which was constructed by taking the characteristic value of the pieces of ester compounds as principal diagonal element.
提出了拓扑方法，即考虑分子图顶点的性质，直接用酯类化合物的分子碎片的特征值为主元来构建邻接矩阵。
This element is receded, in relation to the volume of the terrace, so the spatial emphasis is on the main diagonal visuals previously mentioned (south-southeast).
与露台建筑相对来看，这种元素被减弱了，因此，空间上强调的是前面所提到的主对角线上的视觉效果（东南偏南）。
It is proved that the stiffness matrix of the finite element solution is a block diagonal matrix and its elements are some symmetric and block circulant submatrices.
证明了有限元求解的刚度矩阵是一个块对角阵，且其子矩阵是某种对称、块循环矩阵。
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