矩阵的矩阵

Using a prime m-dyadic additive group ,a expansive method of matrix with orthogonal rows is presented.By means of this method a series of extensional matrices may be obtained.

利用m-并元加性群，本文提出了行正交矩阵的一种扩大法，利用这种扩大法可以得到一系列延续矩阵。

Adjacency matrix: is that relations between the vertices adjacent matrix.

邻接矩阵：是表示顶点之间相邻关系的矩阵。

Chapter one and chapter two use normal form of idempotent matrices and antisymmetric matrices over finite fields to construct cartesian authentication codes respectively.

第一章、第二章分别利用幂等矩阵及反对称矩阵的标准型构造了卡氏认证码。

Any sequence of operations can be combined into a single matrix using matrix multiplication.

任何操作序列可以组合成一个单一的使用矩阵乘法矩阵。

Generalized strictly diagonally dominant matrix plays an important role in matrix theory and real applications.

广义严格对角占优矩阵在矩阵理论和实际应用中具有重要的作用和意义。

But it isn't easy to determine whether the matrix is or not generalized strictly diagonally dominant matrix in reality, especially for the large matrices.

但实际中对此类矩阵进行有效判别，尤其是对大型矩阵的判别，还存在许多困难。

In chapter four, by defining and studying a type of local doublediagonally dominant matrix, we give some new criteria foridentifying generalized strictly diagonally dominant matrix, andextend some existing results.

第四章定义了一种局部双对角占优矩阵，给出了广义严格对角占优矩阵的几个新判别法，推广了已有的一些结果。

Social accounting matrix is a kind of national accounts represented by a square matrix which reflects all kinds of relations among the social agents. However, the SAM is generally constructed on the basis of the system of national accounts published in 1993, so it doesn't illuminate the contribution of resource and environment to economic growth and vice versa.

摘要社会核算矩阵是"以正方形矩阵表示的国民经济核算账户，它反映了一定时期内社会经济主体间的各种联系"，但目前的社会核算矩阵的编制多参照93年国民经济核算体系的中心框架，没有体现自然资源和生态环境对经济发展的贡献以及各类活动对环境的影响等等。

The transfer matrix method is used to carry out the vibration characteristic analysis of the fluid-filled piping system. The transfer matrix of the axial, transversal and torsion vibration of the fluid-filled straight pipe element is presented. And the transfer matrix of the elbow is derived according to the discrete model of the inextensible theory of the curve pipe. The effect of the flexural factor on the elbow's transfer matrix is studied.

基于充液直管的梁模型，考虑液体与管道之间的泊松耦合，详细推导了充液直管单元的轴向、横向及扭转振动传递矩阵；采用弯管不延伸理论的离散模型，将变管离散为一组首尾相连，并成一定角度的短直管单元，通过建立弯管处力平衡方程与连续性方程，建立了弯管平面内振动的传递矩阵，并研究了弯曲因子对传递矩阵的影响。

Therefore, we may get on with these matrices technique by using their special structure, and then reduce a quantitative level of the multiplications, and the research have definite real meaning.

对于此类问题，其相应的矩阵往往具有一些特殊的结构，因此，利用这些矩阵的特殊结构进行技巧性的处理，使矩阵的计算量降低一个数量级，这一问题的研究具有重要的理论意义和现实意义。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。