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 In this paper,we set the conception of quadratic form of a graph and quartic form of a graph, the necessary sufficient condition on 1-factor of graphs and 2-factor of paar graphs and obtain a counting formula for 1-factor of graphs. 本文应用图的二次型与四次型的概念，得到图有1－因子、偶图有2－因子的充要条件，并且得到了图的1－因子的计数公式。 短句来源 A Simple Necessary Sufficient Condition for A Double Diagonally Dominant Matrix to Be Generalized Strictly Diagonally Dominant 双对角占优矩阵为广义严格对角占优矩阵的充要条件 短句来源 相似匹配句对
 The necessary and sufficient 这一结果颇有意义。 短句来源 THE SUFFICIENT AND NECESSARY CONDITION OF f(x,y) =f(x,y) _（x∈X）~（Sup）f（x，y）_（y∈Y）~（inf）f（x，y）＝_（y∈Y）~（inf）_（x∈X）~（Sup）f（x，y）的充分必要条件 短句来源 NECESSARY AND SUFFICIENT CONDITION OF PROPOSITION 命题中的充分必要条件 短句来源 By using the ranks of matrices, necessary and sufficient 本文利用矩阵间秩的关系给出Drazin逆逆序律成立的一个充分必要条件 短句来源 Necessary and sufficient conditions for Hermitian matrix Hermite矩阵的等价条件 短句来源 查询“necessary sufficient condition”译词为用户自定义的双语例句

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 A necessary sufficient condition for a zero-one law to hold is given when the edges are chosen independently. This paper derives the necessary and sufficient condition for calculation of structural vibrations by using mode superposition method.The method of determining complex frequencies and modes of structures in the case of meeting the necessary sufficient condition is presented 本文导出了用振型分解法计算结构振动的充要条件,提出了在满足这一充要条件的前提下计算结构的复频率和复振型的方法。 This paper presents two important concepts:Voronoi polytopes and feature-disturbance angles.The former depicts geometric charactristic among all featurevectors of nominaltransformation matrix Zo;the latter describes the location of measurement vector dU among feature vectors Zi.Based on the two concepts,the paper reveals the necessary-sufficient condition and sufficient condition,under which faults are diagnosable in analog circuits with tolerance,evaluates the power and limitation... This paper presents two important concepts:Voronoi polytopes and feature-disturbance angles.The former depicts geometric charactristic among all featurevectors of nominaltransformation matrix Zo;the latter describes the location of measurement vector dU among feature vectors Zi.Based on the two concepts,the paper reveals the necessary-sufficient condition and sufficient condition,under which faults are diagnosable in analog circuits with tolerance,evaluates the power and limitation of extremal methods and threshold methods for location of faults,and points out possible ways to improve these methods. 提出了描述标称转移矩阵Ｚ０的各标征向量几何分布性状的Ｖｏｒｏｎｏｉ多胞体，定义了描述测量向量ｄＵ在标征向量Ｚｉ中位置的标征干扰角θｕｉ。然后利用这两个概念揭示了容差─故障电路可诊充要和充分条件，讨论了定位故障的极值法和阈值法的有效性、局限性，及提高定位准确率的可能途径。 In this paper,we set the conception of quadratic form of a graph and quartic form of a graph, the necessary sufficient condition on 1-factor of graphs and 2-factor of paar graphs and obtain a counting formula for 1-factor of graphs. 本文应用图的二次型与四次型的概念，得到图有１－因子、偶图有２－因子的充要条件，并且得到了图的１－因子的计数公式。 << 更多相关文摘 相关查询

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