方阵

Summary: The concept of matrix and its determinant computing, matrix determinant, matrix sub-block with the elementary transformation, invertible matrix, rank of matrix; vector and its computation, the linear relationship between vector, vector group of rank; linear equations of the nature and structure of linear equations; matrix eigenvalue and eigenvector, similar to matrix and matrix diagonalization conditions, the standard quadratic form with the normal forms, quadratic and symmetric matrix There are qualitative.

内容提要：行列式矩阵的概念及其运算，方阵的行列式，矩阵的分块与初等变换，可逆矩阵，矩阵的秩；向量及其运算，向量间的线性关系，向量组的秩；线性方程组的性质与结构，线性方程组的求解；矩阵的特征值与特征向量，相似矩阵与矩阵可对角化条件，二次型的标准形与规范形，二次型和对称阵的有定性。

Irreducible matrix. A probabilistic proof is proposed, together with

对不可约的非负方阵，其谱半径和诱导的无穷-范数之间满足

We show that for any subshift of finite type determined by an irreducible and aperodic matrix, there is a finitely chaotic set with full Hausdorff dimension.

指出：对于由本原方阵所决定的符号空间有限型子转移而言，存在满Hausdorff维数的有限型混沌集。

An optimal algorithm of the generalized Jacobi method is developed to solve the generalized eigen-problems in the finite element analysis of structural problems.

针对有限单元法结构分析中的对称方阵广义特征值问题，提出广义 Jacobi方法的一种优化算法。

At last, the square Jacobian matrix of low-DOF serial robot is established using screw theory, and the condition of existing singularity is solved on this basis.

最后，应用螺旋理论的方法构建了少自由度串联机器人的雅克比方阵，并在此基础上求解了机构奇异位形存在的条件。

As a result, LS-OOC based on orthogonal Latin square has been acquired. The large cardinality of LS-OOC is beneficial to synchronous OCDMA system.

研究了有限域上的Latin矩阵与OOC码字的联系，设计出基于正交Latin方阵的LS-OOC码字，自相关旁辦和互相关最大值都为1，非常符合OCDMA通信技术对地址码的要求。

The determinant of an array which has as a row a linear combination of two or more other rows is zero.

当一个方阵的某一行是另两行或几行的线性组合时，其行列式为零。

By now,Leiqi has series brand of LEIQI,LOVEBIRD,and YUDIE for face-painting,skin-protection,skin-cleaning,hair beautification and protection and perfume etc.All these products make the way smooth to the market and laid a solid foundation for the company's stable development and prosperity.

时至今日，已形成了以蕾琪、浪琴、爱情鸟、雨蝶、兰碧为主要品牌的彩妆、护肤、洁肤、美发护发、香水的产品方阵，为蕾琪顺利迈向市场取得了一张张通行证，更为蕾琪的稳步发展，繁荣昌盛，奠定了雄厚扎实的基础。

The VBA macro can extend an antenna element to an arbitrary linear or square array with their amplitudes of the array elements being weighted in the Chevbyshev polynomials or Cosine functions.

宏命令将单元天线扩展为任意线阵或是平面方阵，并对天线阵的幅度进行切比雪夫加权或余弦加权。

Experiments indicate that,the arithmetic utilizing assistant matrix resolves the problem that even magic square can not figure out compared with Lauber arithmetic and De la Hire arithmetic,and can realize all even magic squares' resolution compared with using Greece Latina phalanx arithmetic.On the other hand,the arithmetic has sameness time complex degree and approving capability in figuring out odd magic square.

实验结果表明，利用辅助矩阵，该算法和劳伯利算法、哈利算法相比，解决了偶数阶魔方阵无法求解的问题，和利用希腊拉丁方阵算法相比，可实现全部偶数阶魔方阵的求解；另一方面，该算法在奇数阶魔方阵求解时具有相同时间复杂度和满意性能。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。