covariant tensor

the assembly made up of the elements of the four dimensional covariant tensor.

用几种不同的方法对电磁场的不变量进行了求证和讨论 ,指出每种方法都可以归结为利用四维协变张量元素本身构造出洛伦兹不变

A note on the accurate expression of strain tensor;

关于壳体有限变形的准确应变张量表达式的一点注记

The influences of deformation and Poisson ratio on the volume ratio under different strain tensor descriptions are studied.

对不同应变张量描述下的体积比受变形程度及泊松比的影响进行了分析,结果表明:在La-grangian应变张量与Almansi应变张量及Eulerian应变张量描述下,假定泊松比不变,大变形时都会出现体积变化反常的现象;在对数应变张量描述下,当泊松比取值0。

The expressions of the Lagrangian-Green strain tensor and the Eulerian strain tensor and their work-conjugate stress tensors,namely,the second Piola-Kirchhoff stress tensor and Cauchy stress tensor,are derived for the beam under axial uniformly tension,and the constitutive relations of these two pairs of work-conjugate stress and strain measures are also presented.

推导了轴向均匀大变形等截面杆的Lagrangian-Green应变张量和Eulerian应变张量以及分别与它们能量共轭的第二类Piola-Kirchhoff应力张量和Cauchy应力张量的表达式,给出了这2对能量共轭的应力应变张量的本构关系式。

The Differential/Integral Relations between Stress-strain Tensor and Strain Energy Function of Nonlinear Elastic Solids

非线性超弹性体应力应变张量与应变能函数之间的微积分关系

Application of Wavelet Transform to Cable Tension Measurement

小波变换在缆索张力测量中的应用研究

The Study of Wallerian Degeneration Using Diffusion Tensor Imaging;

磁共振弥散张量成像在Wallerian变性中的应用研究

Basis-free Representations for Tensor Functions and Their Applications in Elastoplasticity at Finite Strains;

张量函数的不变表示及其在弹塑性大变形中的应用

maxwell energy stress tensor

麦克斯韦能量应力张量

The Application of MR Diffusion Tensor Imaging in Cervical Cord Diseases;

磁共振弥散张量成像技术对颈髓病变的临床应用研究

Current Crustal Strain Field in the Sichuan-Yunnan Area by Joint Inversion of GPS and Seismic Moment Tensor

川滇地区地壳应变场的GPS与地震矩张量联合反演研究

The Application of Diffusion Tenor Imaging in Monitoring the Development of Cerebral Infarction

MR扩散张量成像在脑梗死演变诊断中的应用价值

The 3-D strain field is formulated based on the concept of decomposition of the rotation tensor and is given in terms of one-dimensional(1-D)generalized strains and a 3-D warping displacement.

基于旋转张量分解的概念，得到了由1维广义应变与3维翘曲位移表示的3维应变场。

Conservation of Mass. Conservation of Momentum. Stress Tensor.

质量守恒，动量守恒，应力张量。

The quantities baβ are the covariant components of a plane tensor, called the curvature tensor of the surface.

baβ是“平面张量”的协变分量，叫做该曲面的曲率张量。

Using the metric tensor ?? one may form compontents of other variances.

利用度量张量?夯箍梢怨钩善渌?变异的分量。

Extension or displacement of a loaded structure per unit load.

柔量每单位加载的伸张或变形

An improved approach on distortion decomposition of magnetotelluric impedance tensor

一种改进的MT阻抗张量畸变分解方法

The Four Dimensional Tensor Expression of Maxwwll's Equations and Its Covariance

Maxwell方程的四维张量形式及其协变性

The changes of endothelin-1 and nitric oxide levels in varicose veins in the lower extremities

下肢曲张静脉组织ET-1和NO含量的变化

Applying VB in Calculation of Pre-stress Elongaton

VB在预应力张拉伸长量计算中的应用

dimensional stability: Ability of paper or film toretainits shape despite variations in relative humidity or mechanical stress.

尺寸稳定性:纸张，胶片或菲林在水份含量和机械应力的变化下所能保持原来形状的能力。