查询词典 parabolic curve

Under some assumptions on the initial value, the asymptotic behavior of weak solutions for a fourth order degenerate parabolic equation with nonlinear relation is discussed.

在一些初值的假定下，讨论一个具有非线性关系的退化四阶抛物方程弱解的渐近行为。

In Chapter 1, two solutions to the elliptical boundary value problem have been constructed through a monotone iterative process, and they might be identical. In Chapter 2, the author expresses the local solution to the parabolic initial boundary value problem taking advantage of Green function. In Chapter 3, the asymptotic solution to the initial value problem of Duffing equation is obtained and the method for finding the approximate solution to the inverse problem is put forward.This paper is planned with a view to the author's research means.

从研究结果看：第一章通过单调迭代过程构造出椭圆型方程的边值问题的两个解，并且指出二者可能是同一个解；第二章利用格林函数给出了抛物型方程的初边值问题的局部解的解析表达式；第三章中，先对Duffing方程的初值问题写出解的渐近展开式，再对其反问题提出一种求近似解的方法。

In chapter 1, firstly, by using classical analysis methods, such as the introduction of Bessel function and semigroup theory, we transform the pseudo-parabolic equation into an abstract operator equation and achieve the existence and uniqueness of the local solution.

在第一章中，利用经典的分析方法，引入Bessel势函数，将伪抛物型方程转化为抽象算子方程，首先，利用算子半群理论，论证了局部解的存在唯一性。

The approximation of the parabolic integro-differential equations is studied with anisotropic biquadratic finite element.

摘要研究具有各向异性特征的双二次元对抛物积分微分方程进行了逼近。

Meanwhile, because the boundary of a Voronoi cell contains parabolic or hyperbolic curves in the Euclidean metric, it is difficult to compute the Voronoi cell area in practice.

同时，在欧氏米制中，由于Voronoi区的边界包含抛物线或双曲线，因而Voronoi区的面积很难被计算。

In this paper we will study the uniqueness of weak solutions of the first boundary value problem for a degenerate parabolic equation.

本文研究了一类具有退化性的抛物型偏微分方程的第一边值问题的弱解的唯一性。

This paper deals with certain kind of parabolic boundary value problem with equiv-alued sur...

本文主要是对一类具有薄层区域的抛物型方程等值面边界问题进行了探讨，并且研究了解的存在性、唯一性及其极限性态。

Blow-up of nonnegative radial solutions for a family of parabolic equation s in bounded domain in RN

其中a，b不同时为0直线的一般式方程能够表示坐标平面内的任何直线。

In this paper, we consider the approximate controllability of the following semilinear parabolic systemwhere Rn be an open and bounded domain with a C2 smooth boundary , and be a nonempty open subset.

本文考虑了如下半线性抛物系统的逼近能控性其中，Ω是R~n中的一个有界开子集，其边界？

The reference domain is assumed to be a bounded open set of R~N with boundary Γ of class C~2. We investigate in this paper the null controllability for the semilinear parabolic equations in non-cylindrical domains. The fixed point method is used in the proof.

本文讨论了定义在上述非柱形区域中的半线性抛物方程零能控性，我们使用的方法主要是通过同胚映射将非柱形区域中的抛物方程转化为柱形区域中的抛物方程，再利用不动点方法得到半线性抛物方程的有关结果。

Page 1 of 71 专四专八考研词汇辨析大总结 ANALYZE ANALYST ANALYTIC ANALYZABLE The analysis of the samples on the murder spot showed some valuable c lues to the police.

对谋杀现场标本的分析为警察提供了一些有价值的线索。 approach 接近，靠近解析：approach 后面接地点，人物和目标时是及物动词，否则是不及物动词。作及物动词时还可引申为研究，考虑，商洽等义，作名词时，可表示途径，态度等。

The fruits bagged and growing at weak-lighting interiorzone of the canopy were more sensitive to light reaction,overall coloring requiredmore than 40% of total sunning,whereas the fruits unbagged and lying in otherparts,required more than 60% of total sunning in order to color fully.

套袋果和内膛弱光处的果实色泽形成对光反应敏感，在占全日照40％的光照强度下即可全面着色；而树冠其它部位未套袋果，果实充分着色需要的光照强度应大于全日照的60％；当光照强度大于85％时，果实着色不再增加。