查询词典 simulation test

Methods in discrete mathematics, such as finite difference equation, simulation, coding, etc. The related cases are "Mortgage loan and other financial problems","Simulation of inventory problem","Adding cipher and extricating for Hill code", and "Input-output analysis".

某些离散问题的数学方法(差分方程问题，仿真方法，密码学等)，这部分内容相应的教学案例是"个人住房抵押贷款与其他金融问题"，"库存问题的仿真方法"，"Hill密码的加密、解密和破译"和"投入产出分析"等

The other approach is to use finite difference method to solve PB equation and incorporate the solution into SD simulation, which produces our FDSD simulation procedure.

将有限差分法求解PB方程的方法与随机动力学相结合，得到FDSD模拟程序。

After analysis on the method of the damage simulation, we have obtained the three dimensions' finite element equation of damage simulation.

讨论了将损伤反映到损伤有限元支配方程中的方法，得到了混凝土损伤场有限元计算的方程。

Using numerical simulation technology and method of orthogonal experiment design and single factor rotating optimization, this thesis makes a study of "lost core injection ", thus achieve the optimization of the parameters of molding process, to offer basic reference when developing production technology and mould of the plastics intake manifold. Based on the study of the status in quo and development trend of weight reduction on automobile, the application of plastics to automobile and intake manifold, then under the guidance of theory model and numerical simulation technology in the process of high polymer material, this thesis launches flowing main research work: First of all, on the basis of the three-dimensional model of the part and finite element net model, several designs of gating and running system are numerically simulated and analyzed via MPA of Moldflow.

本文在对当今汽车轻量化、零部件塑料化以及的汽车进气歧管塑料化的发展现状和发展趋势进行了研究和简要介绍，然后在高分子材料成型过程中的理论模型和数值计算方法的指导下，展开主要的研究工作：首先，在零件三维模型和有限元网格模型的基础上，使用Moldflow 的MPA模块对塑料进气歧管的多个浇注系统设计方案进行数值模拟，通过分析各个方案的充填质量、熔接线位置及数量等指标，得到了综合质量较高的4 个进料口的浇口位置及半限制型浇口大小的浇注系统。

The approach of computational simulation is the finite element method.The whole research is combined by the following three parts. In part one, a program on quadtree method is compiled. It can automatically generate planar structures with all-quadrangular, good quality elements in high speed, and it can create data files on information of elements and nodes, which provide the foundation for finite element analysis. In part two, a program on finite element calculation is compiled by object-oriented method, During the simulation of fracture, the displacement and stress are calculated by the program.

本文的工作可分为三大部分：第一部分编制了四叉树法程序，通过它可对平面结构进行单元离散，快速自动生成质量较好的全四边形单元，并获得离散后的单元信息和节点信息，为有限元计算打下基础；第二部分利用面向对象方法编制了有限元计算程序，在破坏模拟过程中，利用它进行位移、应力分析；第三部分对脆性材料的破坏过程进行了模拟。

Although the tendency and the occurrence of fish-hook effect in partial separation efficiency curve agree with experimental data, simulation results are still two-fold lower than experimental data. It is necessary to improve the simulation method to obtain accurate data in the near future.

两相流的模拟结果亦显示，增加水旋风分离器之分流比可以提高分级效率，而且有明显的鱼钩现象出现，这和实验结果有相同的趋势；但是模拟的分级效率比实验结果低了大约2倍，因此尚有进一步的改善空间。

The main study object is Zhalong Wetland in Songnen Basin. The research of valley 3D visualization scene construction and flood routing simulation realization method are dealt, the solution of flood flow field simulation and cross section analysis are discuss emphatically.

本文以松嫩流域扎龙湿地为主要对象，对流域三维可视化虚拟场景构建和洪水演进实时动态模拟及其实现方法进行研究，着重探讨洪水流场模拟分析和断面分析问题的解决方法。

According to the operating characteristic of the fluidics and the theory of hydromechanics, a dynamic model of the impactor is established, in order to bring the percussive rotary drilling technology into full play. Also a simulation program is developed to calculate the working properties of the impactor. By using the simulation program, the variation laws of the basic parameters of the hydraulic impactor under different structural parameters and hydraulics are obtained.

为充分发挥冲击旋转钻井技术的应用效果，在考虑射流元件工作特性的基础上，运用流体力学理论建立了液动冲击器工作动力学模型，并编制了计算液动冲击器性能参数的模拟程序，通过模拟计算程序得到了在不同液动冲击器结构参数和钻井水力参数下液动冲击器基本参数的变化规律。

Simulation results prove that,compared to the zero forcing method,the proposed method achieves 9 dB gains under 10-4 of average bit error rate and similar simulation conditions.

仿真实验表明，所提出的方法与迫零法相比，在相同的仿真条件下，在平均误比特率为10-4时可以获得约9 dB的性能增益。

This paper expounds the approach to simulation of the roller gear indexing cam based flexible cam axes,and studies the method of forcing between flexible cam axes and rigid graduator to set up the model for simulation of the roller gear indexing cam based rigid-flexible coupling .

阐述了在考虑凸轮轴柔性条件下实现弧面分度凸轮机构运动仿真的途径和步骤，结合有限元技术和虚拟样机技术，研究了如何在柔性体凸轮轴与刚体分度盘之间施加作用力的思想和具体实现方法，为该机构的刚柔耦合运动仿真提供了基础模型

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。