查询词典 abelian equation

Accroding to the self-consistency,the same eigenvalue equation as the one directly deduced from the Helmholtz equation determining WGM is obtained.

基于自洽场要求，得到了同直接求解描述WGM问题的Helmholtz方程一样的本征值方程。

A larger error often occurs in measured results by multi-specimen J-R curve method because of the difficulty in determining the blunting line equation. On the basis of considering the effect of loading rate on plastic-flow stress, a new blunting line equation in dynamic loading has been obtained: J=2NK0.5(subscript εFΔa.

针对多试样J-R阻力曲线法因钝化线的不易确定性常造成测试结果J误差较大的情况，考虑了加载速率对塑性流变应力的影响，给出了一新的动载条件下的钝化线方程：J=2NK0.5

We present the fundamental theories of Noether symmetries and conserved quantities of mechanco-electrical dynamical systems, including variation principle of the system, Noether symmetry transformation, Noether quasi-symmetry transformation, generalized Noether quasi-symmetry transformation, Killing equations, Noether theorem, the form of conserved quantity. And then the basic theory of Lie symmetry is advanced, including the determining equation, structure equation and the form of conserved quantity.

给出机电动力系统的Noether对称性和守恒量基本理论，包括系统的变分原理、Noether对称性变换、Noether准对称性变换、广义Noether准对称性变换、Killing方程、Noether定理和守恒量的形式；给出机电动力系统Lie对称性的基本理论，包括确定方程、结构方程以及守恒量的形式。

By transforming the equation in phase coordinates to the equation in symmetrical components coordinates, dividing circulator nodes and non circulator nodes, and optimizing the diagonal matrices calculation, the method is developed and found to have higher calculation efficiency.

利用统一的变换公式，只需改变变换矩阵，就可以处理各种简单故障和复杂故障。同时给出了对应于常见故障的变换矩阵，并与断线故障处理方法配合，可以完成任意故障的处理。

No reasonable scientific or theoretical basis is given to explain the jump from difference equation to differential equation till now.

从差分方程到微分方程的跨越，缺乏充分的科学基础和理论依据。

Then, we examine the general random walk model in mathematics and derive a two-order difference equation and its corresponding differential equation.

为了得到可与生物试验加以比较的结论，需要求解在给定边界条件下的关于随机荡步模型的二阶差分方程。

Differential equations and difference equations are powerful tools that describe the law of nature, but it is difficult to find their general solutions. Therefore , there has been an increasing interest in the study of the nature of solutions of differential equation and difference equation in theory.

微分方程及差分方程是用来描述自然现象变化规律的一种有力工具，由于寻求其通解十分困难，故从理论上探讨解的性态一直是近年来研究的热点问题。

Through the limit difference method,the partial differential equation of the semiconductor device is transformed into a difference equation,and the corresponding boundary condition is discretized with high accuracy.

采用有限差分法把器件工作的偏微分方程转化为差分方程，并将相应的边界条件转化为精度较高的离散化形式。

Sales, in turn, is related to advertising expenditures via a differential or difference equation termed a state equation.I...

本文仅介绍其中两类最重要的广告动态最优控制模型，并在此基础上对所介绍的模型进行评析，同时指出进一步研究的方向。

Transpiration ; mathematical analysis ; heat transfer ; differential equation ; difference equation.

发汗；数学分析；热传导；微分方程；差分方程

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48