查询词典 matrix

Nanoparticle of an appropriate proportion were homogeneously dispersed in the PI matrix, and the interfacial adhesion between the matrix and the nanoparticle was hence strong owing to the high specific surface area and reactivity of the nanoparticle. Subsequently, the molecular chains of PI attained unchanged or even increased interaction at a proper mass fraction of the nanometer particle, which contributed to improve the wear-resistance of the nanocomposites.

采用PI的原位聚合填充方法，利用聚酰亚胺与无机纳米表面较强的相互作用（如静电作用、较强的范德华力、氢键甚至化学键的形成），用非水悬浮工艺制备了无机纳米/聚酰亚胺纳米复合材料，率先用大型分析仪器全面地表征了复合材料的结构，采用原位聚合填充法制备的聚酰亚胺复合材料中，无机纳米分散状态良好；无机纳米氧化物/聚酰亚胺复合材料的结构表征显示出PI有机相和SiO〓无机相之间形成了键联型复合体系，两相相互影响；在复合体系中，单相本体的结晶结构并未发生改变；在摩擦过程中纳米氧化物没有发生价态的转变；无机纳米氧化物的加入，提高了聚酰亚胺的耐热等级；适量纳米氧化物并不影响复合材料的机械性能， 2。

To solve the problem encountered in finding a proper rotation matrix and translation vector, approximate and precise solutions are provided successively. The approximate one has the advantage of utilizing existing solution, with limited range of weight to choose from. The precise one has no limit to weight, and can also prevent the problem of obtaining a mirror matrix of the correct one. Besides, it permits the'hat'to be amplified to fit the size of'head'.

其中近似解可以直接套用现成的公式计算，但是权重的选择余地不大，而精确解则无此限制，而且从理论上解决了不同权重下求解旋转矩阵和平移向量时，可能出现错误的旋转矩阵的问题，并允许在配准时对"帽"进行缩放以适应"头"和"帽"的大小不匹配的问题。

They may play important role in the proteolysis of the extracellular matrix, cell-cell and/or cell-matrix adhesion and membrane fusion.

二、ADAM19是本实验室克隆的新基因的编码蛋白，是一类锚定于细胞膜表面蛋白家族成员之一。

This paper concerns the construction of a low rank matrix with Hankel structure that is nearest to a given matrix.

本文研究一个给定矩阵的低秩Hankel最佳逼近及其加权逼近的问题。

In chapter 5, we investigate the iterative methods for solving the linear systems by the homotopy perturbation technique, and the numerical rank of a matrix in the matrix computations are considered, especially the ill-conditioned matrices.

本文第五章中我们首先利用同伦摄动技巧考察了线性方程组的迭代解法。其次，从数值计算的角度考察了矩阵的数值秩问题，尤其是病态矩阵。

The rank of the impedance matrix can be reduced by using this method. Thereofre, the CPU time and the memory storage are significantly reduced in solving the matrix equation.

用该方法对阻抗矩阵进行了降阶处理，使得求解矩阵方程所需的时间和所需存储量大大减少。

The relationship between total species and the theoretical rank of the two-dimensional matrix was deduced and it was found that the rank of data matrix was smaller than the total species in sample.

推导了型体总数与两维矩阵的有效秩之间的关系。

At same time, a judgement approach to the reciprocal judgement matrix was also given by establishing the reachable matrix.

针对决策者给出的关于决策方案的一类互补判断矩阵，提出了一种新的改进判断矩阵一致性的方法。

An aggregation approach to the incomplete interval reciprocal comparison matrix and the interval complementary comparison matrix is analysed.

分析了群决策过程中不完全区间数互反判断矩阵和不完全区间数互补判断矩阵的集成方法。

Reciprocal judgement matrix and fuzzy complementary judgement matrix obtained by pair comparison between two alternatives.

以及 2个决策方案成对比较互反判断矩阵和模糊互补判断矩阵。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。