查询词典 Poisson ratio

It is found that amplitude-squared squeezing can be created by 4-photon unitary operator S4 acting on the vacuum state and this shows that the amplitude-squared squeezing can be created by 4-photon unitary operator S4 acting on the vacuum state and this shows that the amplitude-squared squeezing is a new nonclassical effect of light field which is independent of the second order squeezing, antibunching and sub-poisson statistics.

发现4个光子么正算符S4对真空态的作用可以产生振幅平方压缩，这表明振幅平方压缩是一种独立于二阶压缩、反聚束以及亚泊松统计分布的新的光场非经典效应。标签 K光子么正算符相干态真空态振幅平方压缩 K-photon unitary operator coherent state vacuum state amplitudesquared squeezing

Normal process, process with independent increaments,Wiener process, Poisson process, renewal process.

正态过程，独立增量过程，维纳过程，泊松过程，更新过程。

After analyzing the working characteristics of the laser crystal,taking into account of the aeolotropism of heat conduction of Nd:GdVO4 crystal,the general analytical expressions of the temperature field and thermal distortion field of Nd:GdVO4 crystal end-pumped by super-Gaussian beam were obtained based on the Poisson equation for aeolotropic heat conduction.

通过激光晶体工作特点分析，考虑到Nd：GdVO4晶体热传导各向异性的特点，采用各向异性传热的Poisson方程，得出了超高斯光束端面抽运Nd：GdVO4晶体温度场以及热形变场的一般解析表达式。

Using discrete Poisson kernel,Boza and Carro defined〓inlat-ely,as well as proved the equivalence with〓inandeach other.Particularly,with the idea of atomic decomposition,Boza and Carro inestablished the atomic Hardy space on Z,and showed the equivalence with〓.

最近，Boza和Carro在中用离散Poisson核〓和一类Schwartz函数分别给出了离散Hardy空间的定义，并证明它们与和中的〓相互等价。

Some improvement on the original Poisson equation numerical generation grid method in which the control over grid concentrativeness partly lost due to the grid improvement on orthogonality was made.

在最初Poisson方程数值生成网格方法中对汇聚性的控制并不十分有力，因为随着迭代次数的增加，正交性得到改善，但离壁距离以及网格线分布难以保证。

"Davidia involucrate" was a rare valuable and endangered plant in China. In this article, We studied the distribution pattern of its population with t test of Dispersal index, X^2 test of Poisson distribution and F test of Morisita's index. Its assemble intensity is also analyzed through Negative binomial index, Green's index, Lloyd's index and Patchness index.

采用扩散系数的t检验、Poisson分布的x^2拟合检验及Morisita指数的F检验来研究珙桐种群的空间分布格局类型，用负二项参数、Green指数和Lloyd的平均拥挤度m(上标*与聚块性指标来研究珙桐的聚集强度。

The bending problem of simple-supported parallelogrammic plates on Winkler foundation is reduced to two simultaneous Fredholm integral equations of the second kind by applying Green quasifunction method. The Green quasifunction is set up by using the fundamental solution of Poisson equation and the normalized boundary equation.

应用准格林函数方法，即利用方程的基本解和规范化的边界方程构造一个准格林函数，将Winkler地基上简支平行四边形薄板的弯曲问题化为两个耦合的第二类Fredholm积分方程，此积分方程的核表示式在区域的边界上具有奇异性。

Further application of the partially perturbative density functional theory to MX2-NX-H2O solution indicates that the present theory is better than the Poisson-Boltzmann equation and can be used to predict the structures and ion-partitioning of high-valent ions in charged nanopores.

对混合电解质溶液MX2-NX-H2O的结果同样表明本文的部分微扰的密度泛函理论要好于传统的Poisson-Boltzmann方程，且能够预测高价离子在带电纳米孔内的结构与分配。

The bi-harmonic equation of simply supported thin polygonic plates is decomposed into Poisson's equations.

简支多边形薄板双调和定解问题可分解为二个互不耦合的Poison方程的定解问题。

By way of eight experiments and statistical analysis of loads of overhead crane in actual usese, we have got that the lifing load is stationary, normal and homogeneous Poisson, and got distribution function of lifting load, the load spectrum factor, the rain-flow counting results of stresses and statistical results of location of the trolly, that will provide a large number of datas for reliabilitic design of overhead crane.

通过对八台桥式起重机现场使用载荷的实测试验与统计分析，得出桥式起重机吊重载荷的平稳性、正态性、齐次泊松性、幅值分布、载荷谱系数，以及应力的雨流计数结果、小车位移分布等，为桥式起重机可靠性设计提供了大量的统计数据。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。