理论模型

According to the theory of flow diffusion and convection, three-dimensional state equation of radon field is established for constant and variable diffusion coefficient and convection rate. The numerical solutions for different coefficient and different boundary conditions are obtained for two models of radon field which have respectively source in the side and inside of collapse column.

根据流体场的扩散理论和对流理论，建立了扩散系数与对流速度为常量或变量情况下的氡气场三维状态方程；对於陷落柱柱体侧面有源氡气场和柱体体内有源氡气场两种理论模型，给出了不同系数和边界条件下的数值解的形式。

The origin of theoretic conflict is discussed through different methods, different angles are disclosed of the hotspots that different standards play a role in environment quality. The divarication on specialization of environment density products in industry structure is argued. At last, the pollution control effect on competition is studied by theoretical model.

从理论发展的不同脉络为线索分析南北矛盾的产生，从双方争论的热点问题探讨环境标准的差异对南北国家环境状况影响的不同理论视角，分析了南北双方产业结构中环境密集产品的专业化上存在的分歧，最后采用理论模型研究污染控制对国际竞争力的影响。

Based on the theories of welfare effect and endogenesis growth, this thesis attempts to explore China's defense expenditure demand and economic effect by means of theoretical models as well as calculation and analysis.

本研究以福利效用理论和内生增长理论为基础，通过理论模型和计量经济分析探讨中国国防支出的需求和经济效应。

Based on the research of chaos and software requirements complexity theory, a theory model was proposed.

在基于混沌理论和软件需求复杂性理论研究的基础上，提出一种理论模型。

The numerical solutions for different coefficient and different boundary conditions are obtained for two models of radon field which have respectively source in the side and inside of collapse column.

根据流体场的扩散理论和对流理论，建立了扩散系数与对流速度为常量或变量情况下的氡气场三维状态方程；对于陷落柱柱体侧面有源氡气场和柱体体内有源氡气场两种理论模型，给出了不同系数和边界条件下的数值解的形式。

In contrast, the word metaphor throws more lights on the understanding of learning object, such as, among other things, the hierarchy of learning object, which the well-known metaphors have failed to unveil.

在第二章中，我们深入地讨论了与本课题相关的三个理论模型，即Reigeluth的精加工理论、Merrill的部件呈现理论和D。

Based on the theoretical model of the optical and near-infrared wavelength refractivity which is recommended by the International Union of Geodesy and Geophysics's resolution in 1999, as well as, theory of Mendes(2004), we rededuce some theoretical formulae and give the practical expressions of hydrostatic and non-hydrostatic components of the refractivity.

本文基于国际大地测量与地球物理联合会1999决议推荐的光学和近红外波段的大气折射率差理论模型，在Mendes（2004）理论的基础上，对某些理论公式进行了重新推导，给出了大气折射率差静力学和非静力学分量的实用表达式。

These methods and models are based on solving the Schrodinger equation.

已经提出来的理论方法和建立的理论模型基本上都是基于求解含时薛定谔方程，这就要求理论工作者开展一些数值计算，即基于势能面的量子波包的数值模拟也越来越显得重要。

For the four types of possible motions of caisson breakwaters, a dynamic analysis model of caisson breakwaters under breaking wave impact is founded and a numerical method is presented, which can be used to simulate the motions of caisson breakwaters. A small scale model test is designed, which can be used to examine the dynamic analysis model and numerical method.

本文对近破波作用下防波堤的动力响应进行了研究，针对防波堤的四种运动情况，建立了沉箱式防波堤的动力分析模型和数值模拟方法，并设计了一个模型实验，通过实验对所提出的理论模型和数值模拟方法进行了检验。

The researches on solar flare atmosphere can be divided into two fields.

目前对耀斑大气模型的研究总体上可分为半经验模型和理论模型两大方面。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。