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The results under the oil lubricate friction conditions were similar with those under the dry friction conditions. The wear mechanism of 3Cr13 matrix alloy was micro-cutting and distorting wear. For the composites with a low fraction of TiC particle, distorting wear dominated and cutting was partly operating. For the composites with a high fraction of TiC particle, stress fatigue wear and wear of hard phase decohesion has occurred, but the main wear mechanism was still distorting wear. When the wear experiments were performed under the oil lubricate friction conditions, the main wear mechanism has became to abrasive wear and fatigue wear for the composites with the low TiC fraction, and fatigue wear would be to dominate for the composites with the high TiC fraction. There were similar wear mechanisms in H13 and 1Cr18Ni9 matrix composites.

在干摩擦条件下，3Cr13基体合金的磨损机理为显微切削和变形磨损；低体积分数的复合材料磨损机制以变形磨损为主，兼有少量的切削磨损机制；高体积分数的复合材料磨损机制以变形磨损为主，兼有应力疲劳磨损和脆性相剥落磨损；在油润滑摩擦条件下，3Cr13基体合金的磨损以磨粒磨损为主；低体积分数的复合材料磨损为磨粒磨损和疲劳磨损；高体积分数的复合材料磨损以疲劳磨损为主。H13、1Cr18Ni9基体及其复合材料的磨损机制类似于3Cr13基体及其相同体积分数的复合材料。

This article mainly discusses four kinds of solution system of linear equations,such as Elementary operations, the tecnique of Orthogonalization,Gaussian elimination method and Block matrix,and some ways that how to solve the multiple polynomial equations and decomposite the multiple polynomial matrix.

本文主要讨论了利用初等变换、正交化的技巧、高斯消去法和分块矩阵的四种求解线性方程组的解法，以及一些关于多元多项式方程组求解和多元多项式矩阵分解的方法。

With the aid of the spectral decomposition and finite expression formula of matrix we can compute matrix function.

利用矩阵函数的谱分解与有限表示形式计算矩阵函数。

In this paper another deductive proof of the algorithms for the recursive solution of the system of linear equations with a Toeplitz coefficient matrix is considered, and formulas for the specific recursive solution of the various forms of the system of linear equations in accordance with a Toeplitz coefficient matrix are given.

本文给出了具有托布里兹系数矩阵线性方程组递推解法算式的另一推导证明方法，并给出了基于托布里兹系数矩阵的各种线性方程组的具体递推解法公式。

On the basis of force density matrix of cable element ,a force density matrix of triangle membrane element is introduced.

本文在已有的索单元力密度矩阵的基础上推导了三角形膜单元的力密度矩阵。

It was shown that the matrix suction decreased with the increase of the water content and density. The relationship among temperature, density, matrix suction and water content was exponential.

试验数据分析表明：基质吸力随含水率的增大而减小；基质吸力随密度的增大而增大：温度、密度、基质吸力与含水率之间符合幂函数的变化关系。

Then, the matrix product of them determined the pressure fluctuations＇power spectral density function matrix .

实验还证实了单个气栓内部瞬时压力的均匀性和料栓内部空隙率的不变性。

The results indicate that there are high density dislocations in the matrix of the composite and the grain of the matrix is finer compared with that of the 6061Al.

结果表明，压铸法制备的Al18B4O33/6061Al复合材料中存在高密度的位错，同时复合材料基体晶粒细小。

In the proposed method the data from state estimation or power flows during larger time interval is used to calculate nodal voltages and the initial value of current transitive-relationship matrix; the variation of diagonal elements of this matrix reflects the variations of the detailed models of system components, network topology and parameters after the perturbation, then by use of the PMU measured data in millisecond level the primary diagonal element can be modified.

该方法采用时间间隔较大的状态估计或潮流数据计算节点电压和电流传递关系矩阵的初值，并利用该矩阵主对角元的变化反映受扰后系统各元件的详细模型、网络拓扑和参数的改变，然后使用相量测量单元毫秒级的量测数据对其进行修正，从而为在实际应用中将相量测量单元与SCADA系统相结合做出了有益探索。

Get the main diagonal of a matrix, or put a vector into the main diagonal of a matrix.

取得的主要矩阵，或将一个向量到对角线的主要矩阵对角线。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。