查询词典 numerical method

In recent years, the extensive application of the fractional differential equation in many modern scientific technique realms makes the research of its numerical method in and abroad prospers.

近年来，分数阶微分方程问题在现代科学技术领域获得了日益广泛的应用。由于其勿庸置疑的重要性，国内外对于分数阶微分方程问题数值方法的研究正在蓬勃兴起。

Fractional Fourier transform procedures for the solution of fractional order equation provided some numerical method.

详细说明：分数阶Fourier变换程序，为求解分数阶方程提供了一些数值解法。

The numerical method for fractional integral presented in thisdissertation is applied to solve the equations.

利用分数积分的计算方法对控制方程进行求解。

The numerical method for fractional integral presented in this dissertation isapplied to solve the equations.

然后利用分数积分的计算方法对这类非线性积分-微分方程组进行求解。

The paper taked 20 nodes isoparametric element as an example and put forward a kind of numerical method combined with the Newton iterative algorithm and Gauss integral algorithm to calculate equivalent loads of prestress in body element.

本文以20节点等参单元为例，提出一种运用高斯积分和牛顿迭代法的数值算法计算实体单元的预应力等代荷载，该方法能够适应各种复杂的预应力钢束形状，并适合计算机编程。

B Through theoretical and experimental studies, the paper investigats the relationships between hammer geometer and stress waveform generated by the hammer. After the mechanical meanings of linear model used by others are demonstrated, a simple expression of rigidity of an equivalent spring for direct impact between a hammer and a rod is obtained. Based on the above work, a mathematical model and numerical method for the impact of the hammer with progressively changing cross-section on the rod are presented.

2应用理论分析和实验研究相结合的方法，探讨了冲击应力波波形和冲锤形状尺寸之间的关系；阐明了冲锤与杆撞击局部变形的线性模型的物理意义，继而分析讨论了冲锤端头曲率半径与撞击弹簧刚度的关系；在此基础上，提出了连续变截面冲锤与杆撞击的数学模型和计算方法。

Compared with numerical method, analytic approach not only has clear geometric meaning, but improves the solving efficiency considerably.

本文提出的解析法丰富了装配约束求解理论，它不仅具有清晰的几何意义，而且便于计算机实现，能够大大提高求解效率。

The genetic algorithm was used to solve the problem to avoid the weakness of the traditional graphical or numerical method.

针对传统的图解法和数值解法的缺点，采用遗传算法对该模型进行求解。

We also studied the influence of the functionality of the core on the mean square radius of gyration by numerical method.

在该公式的基础上，我们利用数值计算的方法求出了相同重均聚合度条件下，星核的官能度对均方回转半径的影响。

The numerical method of the diffusive-gray enclosure radiation heat transfer in complex geometry was studied, and its application was introduced into these two processes to improve the quality of handsaw and single crystal.

复杂结构的辐射换热计算所遇到的主要问题是：结构复杂导致计算量巨大；辐射角系数的计算因遮挡或数值计算误差而难以满足对称性和完整性，从而导致辐射换热计算不准确。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。