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The article incorporates Huygens' principle with existing fire behavior models of surface fire spread, crown fire spread, fire acceleration, builds forest fire simulation models which fit to Anning's terrain, and develops related dynamic modules for Yunnan Province. The experiment explores the spread of forest fires based on the Yunnan's special topography simulation.

利用惠更斯原理进行林火蔓延模拟，结合国际上成熟的林火行为模型（Rothermel的地表火模型，Van Wagner的树冠火蔓延模型，McAlpine的林火加速模型），建立适合云南省特殊地形的林火蔓延动态模型，并开发相应的动态模拟模块，在云南特殊地形地貌上的林火蔓延模拟做出一定探索。

To the problem of current hybrid simulation algorithm lacking feasibility and commonality,a new hybrid simulation approach using commercial software PSCAD /EMTDC is presented in this paper.

针对现有混合仿真算法缺乏灵活性和通用性的问题，提出了应用商业软件PSCAD/EMTDC实现混合仿真的方法。

The simulation of rainfall-runoff is an important part of hydrology simulation.

降雨径流模拟是水文模拟的重要组成部分。

The simulation results show that the illuminance distribution simulation is acquired by this software, and it satisfies the request of users.

如何有针对性地对这些光源进行精确的光线追迹及光照度分布分析，成为当今我国照明工程的一个重要课题。

To provide theory foundation for inverted deduction work, numerical simulation for propagating in highway-surface with exceptional block and inanition and crack has been performed. The numerical simulation results show that the BEM is an effective method for the elastic-waves propagating in highway-surface concrete medium.

利用边界元法能够很好的描述弹性波在砼介质中传播的特性，正演模拟异常石块、脱空和裂缝对波的传播的影响，为进一步的反演工作提供理论依据。

With the compare of research methods such as direct experiment, indirect method and numerical simulation, the numerical simulation method based on the Functional Virtual Prototype technology has been decided to use in the vehicle-road interaction research. The Dynamic FEA method has been decided to use in the road response research.

本课题在系统分析了各种车辆—道路相互作用研究方法的基础上，针对直接实验方法、间接方法和数字仿真方法的发展，并结合"功能化虚拟样机"技术的应用背景，确定采用基于多体系统动力学理论的数字仿真方法进行车辆—道路相互作用研究；针对有关道路响应的各种研究方法，确定采用动态有限元方法进行道路响应的研究；并分析了各种道路破坏的评价方法。

It validates the reliability of the simulation system and is an indispensability part of the simulation system.

通过对仿真结果进行分析，验证了仿真系统的可信度，为以最少的投入，最短的时间，实现直观、真实的显示整个塑炼过程，实现对挤出过程的实时监控的目标迈出了第一步。

Trimming simulation ability is indispensably necessary for the whole simulation system.

切边计算是完整的复杂蒙皮拉形过程数值模拟系统不可或缺的一部分。

Firstly, the transient stability of the modes by which some kinds of huge power suppliers are connected with AC power grid is analyzed and compared in detail; then a detailed transient stability simulation of a certain large-scale demonstration system is performed; finally some helpful conclusions are obtained: in the general situation, the bundling power transmission mode is favorable to increase the stability of sending system; if it is helpful to evidently increase the inertia of the equivalent leading group, the mode that connects the huge power supplier with sending system will be helpful to enhance the stability of sending system, however it is necessary to perform simulation and analysis while these principles are applied to FACT systems.

首先从机制上对几种大电源接入交流系统方式的暂态稳定性进行了详细的分析和比较；然后对大型算例系统进行了详尽的暂态稳定仿真；最终得出了一些有用的结论：一般情况下，打捆送电方式有利于提高送出系统的稳定性；如果有助于显著增加领前群的惯量，则与送端系统相联的方式也有助于提高送电系统的稳定性，但仍要结合具体系统进行分析。

The simulation outcome demonstrates that various control measures after April 20,2003 in Beijing and the public holidays starting from May lst to May 5th have a significant impact on containing the epidemic situation. The most dangerous days, around April 27, when the number of uncontrolled SARS patients in the society reached at its peak, can also be calculated. The SARS infectiousness number newly reported in Beijing has been at a low level since May 20. But simulation experiments describe that it may fluctuate with import of SARS infectiousness from outside Beijing, weakening of quarantine, more social activities, and so on.

同时应用动力学模型，对北京的SARS疫情进行分时间段的模拟与SARS实施控制因素影响分析，结果表明，2003—04—20以后一段时间内实行的各种控制措施，以及5月1日—5月5日的长假对于北京SARS疫情的控制是非常有效的；而4月27日左右北京市社会上未得到有效控制的SARS病人数达到高峰，是最危险的时期。5月20日以后，北京的SARS疫情基本保持在低发的平台期，但是如出现较多的外来SARS病例输入，而内部隔离强度又减弱、社交活动增加等情况下，北京SARS疫情可能会有一定程度的波动与反弹。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。