查询词典 principal

The wave is allowed to propagate along the symmetric principal direction as well as along off-principal-axis direction.

波既可以沿平行于主轴的方向传播，也可以沿偏离主轴的方向传播。

Principal stress in the direction of zero principal strain has significant effect on strength and deformation of soil in plane strain state.

零应变方向的主应力对平面应变状态下土的强度和变形均有重要影响，认识土的弹塑性特性是正确确定零应变方向主应力的前提。

In order to predict the principal stress in the direction of zero principal strain correctly, it is necessary to understand elastic-plastic behavior of soil during load-decreasing process.

研究土在减载和往复荷载下的弹塑性特性，建立反映土减载屈服的弹塑性本构模型，具有重要的学术价值和工程意义。

A great quantity of any angle strain rosette readings was gathered in structural test, the principal strain and the principal direction were calculated by computer program written in this paper.

在结构试验中采集得到的成百上千个任意角度应变花的读数，可用本文编写的计算机程序确定其主应变及主方向，从而替代了科研人员大量的手工计算。

Wrinkles are oriented in the direction of the local major principal stress, and the minor principal stress, in the direction perpendicular to the wrinkle direction, is zero.

这些分析模型通过引入参数对薄膜的本构关系或变形梯度进行修正，然后通过数值的方法进行求解，可以得到褶皱形成以后的应力分布，及褶皱的方向。

The direction of the principal compressive strain obtained in the paper is well consistent with the principal compressive stress axes derived by the geological and seismological methods.

用本文方法得到的主压应变方向与地质学方法和测震学方法得到的主压应力轴方向具有很好的一致性。

Consideration on the basic value of corporation, market value and behavioral value integrally, it chooses indexes, filter indexes with principal component method, distills principal factors, builds up pricing model under seeking system, and checks up the application effect of model, so that it proves that pricing model importing the behavioral factors is more availability than the models before.

在综合考虑公司基本价值、宏观市场价值、心理行为价值三方面因素的基础上，选取指标，运用主成分分析法筛选指标，提取主成分因子，建立了询价制度下的新股定价模型，并对模型的应用效果进行了检验，证实了引入心理因素的定价模型要比以往的定价模型更有效。

Principal factor analysis shows that the first and the second principal factor can classify genus Glycine into two groups which represent subgenus Glycine and subgenus soja.

SSR等位基因的主成分分析结果表明，大豆属中的Glycine亚属和Soja亚属的分类界限是比较明确的，利用第一主成分和第二主成分可较明显地区分开Glycine亚属和Soja亚属。

The method uses techniques such as document space transforming and principal component analysis to map original document vector in very-high-dimension term space to low-dimension principal component space, and then categorizes documents by comparing them to the centroid of each category.

该方法采用了文档空间变换和主成分分析技术，将文档的原始矢量表示从高维词条空间映射到低维主成分空间，并利用文档类别重心进行分类。

Principal component analysis ; feature extraction ; modular principal component analysis ; feature matrix ; face recognition

主成分分析；特征抽取；分块PCA ；特征矩阵；人脸识别

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。