定义了上三角等次对角线矩阵和上三角交错次对角线矩阵；
This paper defined up-triangle equal minor diagonal matrix and up-triangle stagger minor diagonal matrix.
特性矩阵可以通过本征值和本征模式相类似的转变而成为对角线矩阵。
It is known that a characteristic matrix can be transformed into a diagonal matrix by similar transformation using eigenvalues and eigenmodes.
本文以物料平衡为目标函数，选择液相摩尔分数为迭代变量，提出了多组元汽-液平衡闪蒸的矩阵法和对角线矩阵法。
The matrix method and diagonal matrix method of multi-component VLE flash are established in the paper by choosing mole Numbers as iteration variables and material balance as objective function.
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