查询词典 simulation

Flight simulation ; atmospheric turbulence ; correlation function ; self recursive ; numerical simulation

飞行模拟；大气紊流；相关函数；自递归；数值仿真

The tracer migration that the tracer concentration continuously injecting into semi-infinite sand column(initialization velocity is zero) and the pollutant continuously enter into aquifer through a discharging well that completely enter into the dive aquifer are two representative groundwater pollution problems ,Then this paper respectively sets above two decided solution problems and the union simulation problem of groundwater and solute as examples, from the question description, the mathematical model selection and determination, the parameters selecting to carry on the value computation, the read-write of attribute data , visualizes by the IDL programs, carries on the numerical simulation and the visualization post-processing to the above groundwater pollution problems, and according to the numerical solution and the solute migration curves, briefly analyzes and predicts the temporal and spatial distribution features and distribution range of contaminant concentration.

然后分别以半无限长沙柱中连续注入示踪剂浓度的运移、污染物通过一完全进入潜水层的排放井连续进入含水层这两个典型地下水污染定解问题及地下水流和水质联合模拟问题为例，从问题描述、数学模型选取确定、参数选取到运用IDL编程进行数值计算、属性数据读写、可视化，对上述地下水污染问题进行数值模拟和可视化的后处理，并根据数值模拟的数值结果和溶质运移曲线，对污染物浓度的分布范围及随时空变化趋势作了简要分析预测。

Simulation of robot welding process is completed with the application of ROBOGUIDE, the simulating path is changed to TP program for practical welding, and TP program is transferred to robot controller, which all the work about off-line programming and simulation of the saddle-backed welding seam are completed.

应用离线仿真软件ROBOGUIDE完成马鞍型焊缝曲线焊接过程的仿真，将仿真路径转换成实际TP程序，并输入到机器人控制柜，完成马鞍型焊缝焊接过程的离线编程及仿真，运行TP程序完成马鞍型焊缝的实际焊接。

The above have applied to the three items of research institute in the army simulation field and the simulation demonstration of the three gorge five-step ship gate running and controlling system. In the application, these problems are solved which are the compliance of linkage of the software and the system and the expansibility of the software, and these research have achieved better social and economic benefits.

七、已将上述研究成果推广应用到军用仿真领域相关研究单位委托合作的三个项目以及长江三峡五级船闸运行控制系统仿真演示中，解决了应用程序接口的匹配性以及程序的可扩展性等一系列推广应用中的关键技术，取得了良好的社会效益与经济效益，得到用户的一致好评。

The simulation system used the serial-communication of industrial-control machine and converter for the remote control of the trial process, real-time control of the opening angle and running speed of the gate, and, moreover, adopts adjusting instantaneous water quantity in and out of the model to achieve a more accurate simulation of tidal waves.

该模拟系统利用工控机与变频器间串口通讯，对试验过程远程控制，实时控制尾门的开启角度及运转速度，调节模型瞬时进出水量，达到准确模拟潮汐波的目的。

Finally, the simulation of the system and the experimental results of PWM rectifier are presented. The results of the simulation and experiment indicate that the input power factor is close to 1, the output voltage of the rectifier is stable and the high quality charge and discharge: current of the accumulator is achieved, current ripple is small.

本文最后给出了系统的仿真和PWM整流器实验波形，仿真和实验的结果表明：系统实现了输入功率因数接近1，变流器输出电压稳定；获得了较高质量的蓄电池充放电电流，电流纹波小。

a novel miniaturization bow tie rfid tag antenna is proposed based on the triangular sierpinski fractal microstrip.the port characteristics of the proposed antenna are presented by simulation.at the same time,the resonance frequency,the radiation pattern and the efficiency of the sierpinski tag antenna is given.the results of the simulation show that multiple frequency band can be obtained by varying the dimensions of the fractal structure.hence this kind of antenna can be used into the rfid tag antenna very conveniently.

摘 要：基于三角形sierpinski微带分形贴片，提出了一种新型的小尺寸领带结rfid标签天线设计。通过仿真，给出了该分形天线的端口特性，同时给出了该领带结型sierpinski标签天线的谐振频率、方向图以及天线效率。结果表明，采用不同维数的分形结构，可以实现多频段的工作特性，因而该天线可以很方便地应用于rfid电子标签中。

The thesis puts emphasis on the simulation method of the secondary object and achieves the following accomplishments:1 Non-physical simulation method of trampolineWe can adopt two kinds of method on the secondary objectssuch as the trampolines.

本论文重点研究了次物体的模拟方法，并取得了如下研究成果： 1 提出了蹦床的非物理模拟方法对蹦床这类次物体的模拟传统上都采用物理方法。

This thesis is mostly devoted to the architecture and software issues, including the structure of simulation, the control system of aeroengine, modeling of gas-turbine engine, and the communication of distributed simulation system.

涉及到了总体方案设计、数控系统的构成、发动机模型建立方法、分布式仿真的通信技术、数据采集等问题。

Shenglin is a company engaged in the design, development, production, marketing high-end simulation of plants, artificial flowers, artificial plants tree simulation export enterprises have been a ten years of production experience.

盛林是一家从事设计、开发、生产、销售高档仿真植物、人造花卉，仿真人造植物树的出口企业，已具十多年的生产经验。

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。