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These results indicated that this simulation method could factually express air environment in the piggery, and it was an effective method for air temperature and airflow speed simulation in piggery.

表明使用CFD模拟方法能够真实表达猪舍内气流状态，对猪舍内温度场和气流场的模拟是一种有效的方法。

To fully utilize the advantages of 3S technologies, crop growth simulation model and crop management knowledge model, and to grope info the integration method and application mode of key technologies in precise farming adapted to Chinese circumstance, a model and 3S-bascd digital wheat farming system was developed based on plentitude combination of wheat growth simulation model, wheat management knowledge model and 3S technologies.

为了充分发挥和利用3S技术、生长模型和管理知识模型的优势，探索适合中国国情的精准农业关键技术集成方法及应用模式，以软件开发方法论为指导，充分结合小麦生长模型、管理知识模型和3S技术，应用ASP。

In this paper, the main parameters of poison gas's numerical simulation are analyzed on the basis of studying of the numerical simulation and dynamic emulation of poison gas leakage and diffusion possibly occurring in the destructive earthquake.

本文在破坏性地震中可能发生的次生毒气泄漏与扩散灾害的数值模拟与动态仿真研究的基础上，分析了影响毒气扩散的主要参数。

RTM process simulation gives veracious guidance to mould development and com- ponent manufacture. composite ; resin transfer molding; simulation ; permeability ; H-wallboard

但是，由于RTM工艺过程在闭合模腔内完成，有很多影响成型和产品性能的工艺参数：注射压力/流动速率、树脂豁度、纤维渗透率、模具和树

First backward simulation was made by using population parameter method to quickly get an approximate workblank,and then forward simulation was made by using incremental method to modify the workblank outline for the purpose of getting comparatively accurate outline dimension.

介绍了一种用于冲压毛坯设计的新方法——基于正、反向模拟的毛坯外形设计技术，即先用全量法进行反向模拟，快速得出近似的坯料，再用增量法进行正向模拟修正毛坯的外轮廓，从而得到比较精确的坯料尺寸。

According to the method of aircraft system simulation, the control law is validated by simulation based on the population parameter equation of motion of an aircraft. The results indicate that the control law can meet the requests of the UAV, which are safe launch, stable climb, steady fight along the designated altitude and heading holding certain attitude. And then, the UAV can fly following the scheduled fairway.

利用飞机系统仿真的方法，采用飞机全量扰动运动方程对该型无人机飞行控制系统的控制律进行了仿真验证，结果表明，文中所设计的该型无人机飞行控制系统的控制律可以实现该无人机安全发射、稳定爬升、高度稳定、姿态稳定、航向稳定的要求，进而可以实现无人机按预定航路的飞行。

Based on the study of IGES; STEP, especially the study of DXF, a program interface is developed, by which the data can be shared among different CAD systems. According to the different Characters, the respective tool paths are designed. And by a machine configure file, the General postposition process is deal with. On the research of the general simulation technology that is based on the NC codes. By analyzing the characteristics of the CNC system and the NC codes, a set of general simulation interface is developed.

通过对IGES和STEP等产品数据交换标准的探讨，尤其是对应用广泛的DXF的深入分析，建立了与不同CAD系统实现数据共享的编程接口；根据零件的不同加工特征提出了相应的走刀路线，并通过机床配置文件，初步实现了通用后置处理；研究了数控系统和NC代码的特点，建立了仿真通用接口，并提出代码翻译地基本思路。

The method of reading the line, arc, spine, tolerances, surface roughness and full messages of the part from DXF file generated by AutoCAD is mainly introduced. Based on the study of DXF, a program interface is developed, by which the data can be shared among different CAD systems. According to the different Characters, the respective tool paths are designed. And by a machine configure file, the General postposition process is deal with. On the research of thegeneral simulation technology that is based on the NC codes. By analyzing the characteristics of the CNC system and the NC codes, a set of general simulation interface is developed.

本文主要介绍如何从AutoCAD生成的DXF文件中读取直线、圆弧、样条曲线、尺寸公差、表面粗糙度等信息及零件的全局信息，结合回转体零件的特点，通过对应用广泛的DXF的深入分析，建立了与不同CAD系统实现数据共享的编程接口；根据零件的不同加工特征提出了相应的走刀路线，并通过机床配置文件，初步实现了通用后置处理；研究了数控系统和NC代码的特点，建立了仿真通用接口，并提出代码翻译地基本思路。

The simulation results show that this system has good validity and practicability in simulation engineering.

仿真结果表明，该系统具有很强的工程实用性和通用性。

Based on a whole car collision experiment and explicit finite element analysis method, the collision simulation experiment of a cab is completed, the precursive research for the whole car collision simulation experiment is completed..

基于整车模拟碰撞试验和显式有限元分析方法，完成了驾驶室碰撞模拟试验，为整车模拟碰撞试验研究进行了先导性的研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。