均匀分布

The pipe wall with four 2.5 mm diameter sampling holes and a spin generating element mounted upstream for modifying the inlet flow pattern are set up to improve the representative of the sampled fluid.

管壁四周均匀布置4个直径为2.5 mm的取样孔，并在上游采用旋流叶片将来流整改成液膜厚度均匀分布的环状流型，从而增强了取样的代表性。

Using kronecker product of matrix theory, basic link space code chips are recombined and a new kind of LS code is obtained.

对基本LS码片用矩阵中克罗内克积方法重新排列，得到了一类新的LS码，并从数学上证明了这类新码非周期自相关函数具有均匀的IFW，以及组内码字之间的IFW也是均匀分布的。

The key points of DGA is to start evolution with initial population evenly distributed in searching space to avoid the leakiness of subspace, to accelerate the searching process by directed crossover and mutation, to improve holistic survival and adaptive ability by means of competition and parallel evolution in genetic system. However, the crossover and mutation act on different lays in space made the searching uniform.

其基本思路是以空间上均匀分布的初始点展开演化以避免子空间的遗漏，以有方向性的杂交和变异加速和调节搜索，同时杂交和变异作用在不同层面上使搜索在整体上均匀化，通过遗传系统里的并行竞争提高整个群体的生存适应力，从而达到整体优化的目的。

Objective To study the tumor-immune model under the heterogeneous blood perfusion caused by the nonhomogeneity of vessel distribution.

目的 研究血管非均匀分布造成的血液非均匀灌注情况下的肿瘤免疫竞争模型。

Because of randomness of presetting the address matrix between the input and hidden layers, SDM produces unfavorable consequences for classification when handling unevenly distributed patterns. And its learning mode of outer product results in poor nonlinear mapping ability.

然而由于地址矩阵的均匀预置方式，使其在处理现实的非均匀分布时效果不佳；并且它的外积法学习方式使其表达非线性映射的能力不强。

A new data management algorithm for anycast based random sampling in sensor networks;2. Composite random sampling algorithm for scheduling concurrent projects;3. In the existing methods of random summing of total resource,the shape of the total resource curve sometimes distributes skewly,in view of which,the new method was put forward to improve random sampling .

针对现有的资源总量随机求和中存在的资源总量曲线形态有时呈偏态分布的问题，提出了对其随机抽样方法的改进方案，即把随机抽样入口由原来定义在(0，1)区间上改为定义在(0，ki)区间上(ki为第i个局部地质单元的石油资源量保险系数)，利用(0，ki)区间上均匀分布的随机数对风险分析后的资源总量分布函数进行随机抽样。

The elements detected by EDAX revealed that the content of Cu, Fe and Cr in etched region was obviously greater than that in an unetched region where the Cu and Fe were segregated from the foils as the impurity and the Cr was induced from formed conversion coating.

采用SEM和EDAX技术，分析了铝箔在HCl、H〓SO〓、〓、HF混合液中恒流腐蚀后的表面形貌和元素分布，发现最初的蚀孔呈团簇状分布，而随着时间增加，蚀孔转变为均匀分布。

The results are similar: Most species are random distribution, while many are clumped and rare are regular.

四种方法的研究结果均表明，霸王岭沟谷雨林中，多数种群呈随机分布，聚集分布的物种也较多，均匀分布则罕见。

The results show that the probability distribution characteristic of the vertical permeability coefficient in fissured rock zone is much close to the log-normal distribution.

结果表明，同正态分布和均匀分布相比，裂隙岩体地区的垂向渗透系数更接近对数正态分布。

Aggregate intensity of larvae in late instars decreased and larvae dispersed gradually. The cause of dispersion was because of the effect factor of density.

在白菜上，幼虫在 4龄前为聚集分布，5龄以后为均匀分布，棉花和向日葵上各龄幼虫均为聚集分布。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。