随机分布

建立了复合材料颗粒随机分布三维单胞模型，并通过仿真软件MATLAB编写了程序。

The three dimension cell model of particle random distribution is established . A MATLAB program is written .

基于随机分布的断裂破碎带GPR剖面特征分析

Characteristic analysis of the GPR profile of the fractured zone based on random distribution

基于小平面单元模型，给出了一种模拟满足随机分布特性的星载SAR目标原始数据的方法。

Based on the facet model , a method of the simulating of Spaceborne SAR raw target dates with random distribution is proposed .

复杂工程系统基于随机分布的FDD优化算法

Optimization FDD algorithm using stochastic distribution for complex engineering systems

Taylor类多晶晶体粘塑性模型被用于研究晶粒数量对随机分布多晶体拉伸塑性各向异性的影响。

Taylor | type polycrystalline model is used to investigate the effect of grain number in random polycrystalline aggregates on its plastic anisotropy .

少量Al2O3纤维发生了一定程度的破碎，大部分纤维仍保持其原有的形貌特征，随机分布于熔核金属基体中。

Small quantity of Al_2O_3 fibers were broken down to some extent , while most of them remained their original morphology , distributing in the nugget matrix randomly .

同时，参量2~（1/2）U可以取做为含有随机分布较小裂隙的岩石抗拉强度。

The parameter 2 ~ ( 1 / 2 ) U may be taken also as a tensile strength of rock which contains small randomly distributed preexisting cracks .

本文通过仿真软件MATLAB建立了复合材料颗粒随机分布三维单胞模型，并将均匀化理论与有限元方法相结合，预测了金属基复合材料的宏观性能。

Firstly , the random distributed model of particle with MATLAB is built , then the macroscopic properties of metal matrix composites are predicted by the homogenization method was combined with finite element method .

在块体理论基础上，本文介绍了用Monte-Carlo模拟研究岩体开挖面上块体随机分布及锚固问题的方法。

Based on the block theory and Monte-Carlo simulation technology , this paper presents a method for researching block random distribution and anchor design for joint rock excavation .

结果显示健康人PBMC中T细胞受体基因的表达呈随机分布，而肝癌病人的T细胞对于肿瘤细胞的刺激却表现出偏好性。

The results showed that TCR expression displayed random distribution in PBMC of healthy people , but preference distribution in PBMC of patients with hepatocellular carcinoma .

晶须取向随机分布，其结构为15R型，基体为六方晶型的α-Al2O3。

The orientation of whisker distributes stochastically and its structure is 15R type . The matrix is a-Al2O3 with hexagonal structure .

所谓WSN，实际上就是利用大量的有无线通信能力和计算能力的节点随机分布后自动组网而形成的新型网络系统。

It is a new pattern network system that is automatically constructed by lots of nodes which have the abilities of wireless communication and computation . The nodes are distributed randomly .

本文的主要内容如下：（1）针对线性B样条逼近的非高斯随机分布系统，分别考虑线性和非线性动态两种情况，基于自适应观测器进行故障诊断。

The main contents of this thesis include following issues : ( 1 ) The linear B-spline model is used to approximate the output PDF . Considering the linear and nonlinear dynamics respectively , the fault diagnosis methods are proposed based on the adaptive observer .

根据理论分析认为混凝土构件碳化深度的随机分布物理模型符合正态分布与麦克斯韦（Maxwell）分布。

According to the theoretic analysis , it is considered that the physical model of the random distribution of concrete components carbonating depth is coincident with normal distribution and Maxwell distribution .

基于能量等效原理，采用三维有限元方法，考虑短纤维位向的随机分布对复合材料弹性模量的影响，利用有限元能量法对δ－Al2O3（Safil）／Al合金复合材料的弹性模量进行了预测。

Based on the energy equivalence principle , the elastic modulus of Al2O3f / Al composite was predicted by means of the Finite Element Method . In the predicting , the random orientation distribution of short fiber was considered .

Delaunay三角化是十分理想的散乱数据的可视化工具，它可以根据一组随机分布的离散点数据生成唯一的近似等边三角形。

Delaunay triangulation is a useful tool for the visualization for random distributed points . Unique approximate-equilateral triangles can be obtained from a set of random distributed points by Delaunay triangulation .

1009个T-DNA旁邻序列在水稻12条染色体上的定位结果表明T-DNA在水稻染色体上并不是随机分布的，其分布模式与EST的分布比较一致，说明T-DNA偏好插在水稻的基因富含区。

1009 flanking sequences were mapped on 12 rice chromosomes . Our results showed that T-DNA tags were unevenly spread on rice chromosomes and preferentially inserted in gene-rich regions .

以4套共15份同核异质水稻雄性不育系和保持系为试验材料，应用随机分布于水稻12条染色体上的42对SSR引物，分析其核基因组的遗传多样性和亲缘关系。

Four sets of rice isonuclear alloplasmic lines , including 15 male sterile lines and their maintainer lines were analyzed by using 42 SSR markers , which were randomly selected from 12 chromosomes of rice .

因为单向炭纤维增强树脂基复合材料（UD－CFRP）属于脆性材料，它的力学性能如层间剪切强度（ILSS）的大小依赖于UD－CFRP中随机分布的缺陷。

Because carbon fibers reinforced plastic ( CFRP ) composites belong to brittle materials their mechanic properties such as interlaminar shear strength ( ILSS ) depend on stochastic defects .

本文在分析了小尺寸MOS器件栅漏电流的组成机制及现状的基础上，计算了在栅氧化层中随机分布的氧空位对栅漏电流的影响。

The mechanism and situation of the gate leakage current in small-scale MOS device were analyzed . Thus the influences of oxygen vacancy with its position distribution being random on the gate leakage current were calculated .

结合灰色关联分析对Kring模型的随机分布部分中的θ值进行优化，在不增加样本点的情况下提高了Kriging模型的精度。

The theta value of the random distribution of the Kriging model is optimized with the grey relational analysis and it can improve the accuracy of Kriging model without increasing the other sample points .

结论因为有突变热点的存在，说明在VP1区基因中突变的核苷酸并不是完全随机分布的；

Conclusion Nucleotide acids substitutions in ( VP_1 gene was not ) randomly distributed because of the exist of hot spots of mutation ;

在此基础上发展了具有上下两层粗糙界面、中间镶嵌随机分布粒子的次表面介质层的模型，解得一阶Mueller矩阵解中包含七项散射机制。

Based on this , a more complicated model for a subsurface media layer with randomly distributed particles embedded in the middle and both rough upper and bottom interfaces is developed .

根据场景文件中的信息建立高斯CDF映射表，将符合均匀随机分布的二维初始采样进行高斯函数的重要性变换。

Construct Gaussian CDF mapping table according to the information in scene files , and translate initial samples generated from uniformly distributed random variables to follow Gaussian function importance sampling .

其中100个F1花粉不育基因所在的导入片段集中分布于第1、第3和第5染色体上，其余160个非F1花粉不育基因所在的导入片段随机分布于各染色体上。

Among them , 100 introgressed segments carrying F 1 pollen sterility loci concentrated on the region of F 1 pollen sterility genes while 160 introgressed segments not related to F 1 pollen sterility loci distributed randomly over 12 chromosomes .

本文应用自洽方法计算了含随机分布裂纹的基体的等效弹性常数，然后利用GMC方法计算了复合材料的总体弹性常数。

The effective elastic constants of the matrix with random distribution cracks are obtained by means of the self-consistent method , then generalized method of cells is used to get the global elastic constants .

在适应面概念的基础上，Eigen模型能够得到两个重要结论：低突变率时的准物种分布和在临界突变率时到一种完全随机分布的转变，即误差阈。

On the basis of the concept of fitness landscape , we can get two significant features from the Eigen model : the quasi-species distribution at low mutation rate and the transition to random distribution at critical mutation rate , i.e. error threshold .

随机分布反馈光纤激光器（RDFFL）是近几年才发展起来的一种新型光纤激光器。

Random distributed feedback fiber laser ( RDFFL ) has been developed as a new type of fiber laser in recent years .

通过测定论述了成都平原区荒芜草坪2个群落及20个（直径30cm）随机分布不同样圈中优势种之间及优势种与伴生种、偶见种之间的数量特征。

Through the analysis of the quantity characteristic between the advantages species and between the companion living species and the seldom-seen species in the 2 communities and 20 different circles at random in the Chengdu plain deserted lawn .

从探讨基于Mohr-Coulomb准则的新的岩石微元强度表示方法及其服从Weibull随机分布的特点出发，基于岩石三轴应力应变试验曲线，建立了反映岩石破裂全过程的损伤软化统计本构模型。

By discussing the form of new rock micro-unit strength based on Mohr-Coulomb criterion , which satisfies Weibull random distribution , a statistical damage softening constitutive model reflecting the full process of rock failure was developed based on the stress-strain curve of tri-axial tests for rocks .