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We discuss some foundational properties of the convex function.

随后介绍凸函数的几何直观描述、解析定义和凸函数的重要性质。

A universal analytic potential energy function is derived using the cosine function with a phase factor,which is suitable to be applied to the interactions between two atoms in a molecule or molecule and ion.5 kinds of common potential curves are obtained by adjusting phase factors.

利用一种带相位因子的余弦函数,导出了适用于双原子分子或分子离子间相互作用的普适性解析势能函数,通过调节相位因子可获得5种常见形态的势能曲线。

Since the multiple scattering should be considered, the scattering problem of many-cylinders is more complicated than single cylinder. By using scattering matrix method to solve the scattering problem of many-cylinders, first we have to express the incident fieldand scattered field by special function(for example, Bessel function and Hankel function)under cylindrical coordinate, then use the addition theorem of special function to get a linear system of equations to relate the incident field coefficients and scattered field coefficients. The incident and scattered field coefficients for every cylinder can be solved from the linear equations by matching electromagnetic boundary condition pointwisely.

单颗圆柱散射体的散射场解析解很早就被解出,而多个圆柱阵列的散射场问题因为涉及到入射光在圆柱与圆柱间的多重散射,故散射行为较单颗圆柱的散射复杂,因此圆柱阵列的多重散射问题需要利用加法定理来处理;散射矩阵法的主要精神即是先用圆柱座标下的特殊函数对平面波和圆柱散射体的内外域电磁场做无穷级数展开,再藉由特殊函数的加法定理将所有圆柱散射体的展开中心移到同一个展开中心,最后可以得到一组连结整个散射系统的入射电磁场系数及散射电磁场系数的线性方程组,将该组线性方程配合电磁场在散射体边界的连续条件,便可分别求出圆柱阵列中各个圆柱体的内部电磁场与外部散射场,再利用线性叠加原理即可求得整个圆柱系统的全域电磁场分布。

In the first four sections of this paper, these basic knowledge and calculational methods for the study of potential energy function are simply introduced. 9-parameter Murrell-Sorbie analytical potential energy function that can accurately describe especial potential energy function of diatomic molecule is obtained through calculations and analysis for the first time.

本文前面部分在简单介绍与分子势能函数研究相关基础理论知识和计算方法的基础上,通过计算、分析比较,首次得到了能够正确描述双原子分子特殊势能曲线的九参数Murrell-Sorbie解析势能函数。

The equilibrium geometries and disassociation energies also have been determined.

通过Murrell-Sorbie势能函数和最小二乘法拟合得到了解析势能函数。

Then after the author researches the interaction problem of the partial derivative operators with respect to the two points P and Q, analytical expressions as well as series expansions of the kernel function within disturbing gravity field elements are determined, and their explicit expressions which can be applied practically are given for the first time.

深入研究了关于 P 和 Q 两点局部导数算子的相互作用问题,得到了扰动场元之间核函数和协方差函数的解析与级数展开式,首次给出了较为实用的明晰表达式。

By the theory of complex functions, dynamic propagahon problem on Dugdale model of mode Ⅲ interface crack for nonlinear characters of materials was studied. The general expressions of analytical solutions are obtained by the methods of serf-similar functions. The problems dealt with can be easily transformed into Riemann-Hilbert problems and their closed solutions are attained rather simple by this approach.

通过复变函数论的方法,对材料的非线性特性下的Ⅲ型界面裂纹Dugdale模型的动态扩展问题进行了研究,采用自相似函数的方法可以获得解析解的一般表达式,应用该法还可以很容易将所讨论的问题转化为Riemann-Hilbert问题,并可以相当简单地得到问题的闭合解,利用这些解并采用叠加原理,就可以求得任意复杂问题的解。

The diffraction potential functions are obtained by using the eigenfunction expansion method, and expressions for reflection and transmission coefficients are defined.

首先利用特征函数展开法导出了绕射势函数的分析解并进一步得到透反射系数的计算公式,然后利用边界元方法验证了解析解。

Extended elliptic function expansion method is applied to construct the explicit exact solutions of the Zakharov Equation.

将改进的Jacobi椭圆函数展开法应用到Zakharov方程,比较方便地得到新的解析周期解(包含冲击波解、孤波解和双曲函数解)。这种方法也适用于其他非线性方程或方程组

Because the battery energy function has the exponential form, it is difficult to derive an analytic solution.

由于能量函数具有指数形式,很难获得解析解最小化能耗函数。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。