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To meet the need for courseware of CAI in teachinghydraulic systems, in this paper, we talk about the method ofmaking FLASH movies to illustrate the principles of hydraulics.

利用Flash软件的特色,针对液压传动CAI教学课件的需求,制作了准确、生动的Flash动画,直观地展示了液压元件和系统的原理和工作特性。

The simulation results of the cylinder-block model were given in the article, consistent with that of Middlemen"s. It was shown that the block part could improve the uniformity of the flow distribution. The analysis of the flow field of some materials with different power-law factor in the die designed by Mckelvey was close to that of Mckelvey"s. It was shown that the flow distribution was uniform in the die that can producesheets with 1200mm in width. During the analysis the flow channel was divided into several parts to get the details about the fluid flow in each area. A conclusion was drawn after analyzing the influence of the die pressure on the flow distribution, that the higher pressure is good for the output and bad for the uniformity of the distribution. Simulation of the die applying the cylindrical main runner showed the fact that when the cylinder replaced the cone the change of uniformity was trivial. The uniformity of the non-block flow channel was so poor that the block in the proper position of the die channel was necessary. The project of the die for the wider sheet was put forth, and the analysis of the fluid flow in the die was shown.

本文模拟了圆柱管缝隙流模型的三维流动场,得到了与Middlemen结论一致的流动均匀性,并通过模拟直观地展示了采用阻尼块可以改善挤出均匀性的现象;分析了多种幂率指数的流体在Mckelvey等人设计的流道模型中的流动分布,得到了与Mckelvey的分析结果接近的压力降和流量偏差;本文建立了1200mm幅宽机头流道的三维有限元模型,并逐个分析各个区域和多个截面的流动分布状况,由此揭示了1200mm幅宽L-型机头流道内的流北京化工大学硕士学位论文动分布基本均匀,并在分析了机头压力对于挤出流动分布的影响后得出结论:较高的机头压力可以获得较大的产量,但是不利于物料均匀分布;模拟了采用圆柱管主流道时机头流道内的流动分布,得出结论:主流道由圆锥管改为圆柱管时对流动均匀性影响不大,通过设置适当的阻尼仍然可以达到挤出平衡;模拟了两端进料式圆柱管无阻尼流道的流动均匀性后得到结论:两端进料式无阻尼结构的流动均匀性较差,宽机头中仍然有必要设置阻尼块;确定宽幅机头流道的基本方案,并设计了一种宽幅防水卷材挤出机头流道的结构,通过流动模拟表明该种结构的流动均匀性较好;考察了宽幅机头对于不同厚度片材的挤出适应性,得到结论:当生产不同厚度的片材时,阻尼块高度需要调整。

The 3-D single phase simulation using CFX for the rod bundle channnel was going on by choosing the reasonable mathematical and physical models and boundary conditions. After a lot of numerical calculations, the sensitivity of gemotery was validated. The flow and heat transfer characteristics for several typical velocities were numerically analyzed and visually showed. The results show that the CFX simulation can be used for designing and optimizing fuel assembly in reactor engineering.

通过选定合理的数学、物理模型和边界条件,采用通用CFD程序ANSYS CFX 10.0对带有AGA-2G定位格架的5×5棒束通道流场进行了三维单相数值模拟,经过大量计算,验证了厚度、刚突等几何敏感性,得到了带定位格架棒束通道内的速度、压力和温度分布,分析了定位格架对流场、温度场的影响,直观地获得了搅混叶片的搅混效果,并将结果同实验值进行了初步比较。

The attempts to use water hyacinths to combat algae in Dian Lake provide a cautionary tale about the consequences of the loss of ecological balance.

而滇池引入水葫芦治理蓝藻失败的故事,更是直观地说明了生态平衡被打破之后的严重后果。

I make inductions based on the system description of preposition in the Annals of San Guo, reflect the use situations with tabulation method and analyze their characteristics.

首先以列表的方式直观地显现《三国志》介词的使用情况并分析其特点。

Results Artery wall,vessel lumina and flow can be displayed by color Doppler flow imaging directly.Hemodynamics change can be displayed by spectrum Doppler.

结果 彩色多普勒血流显像可以直观地显示动脉管壁情况、管腔回声及血流充盈情况,频谱多普勒可以显示血流动力学改变。

The relationship between an object s three dimensional entity and its two-dimensional multi-views can be expressed vividly and visually by Solid Edge V11 parametric molding software, which constructs three-dimensional entity model and represents an engineering object spatially and dynamically.

用SolidEdgev11参数化造型软件建立三维实体模型,以真正的空间概念和动态方式表示工程对象能形象直观地表达一个对象的三维实体与多幅二维视图之间的关系。

Other browser comparison tools show you only images of different browser renderings, allowing you to visually compare them.

其他浏览器比较工具您展示不同的浏览器渲染只有图像,让您直观地比较它们。

Objective To design and fabricate realia circuit for rotary anode startup experiment. It is convenient demonstrate the experiment and experimental data.

目的:设计旋转阳极启动电路并制作实验教具,方便直观地对学生示教此项实验内容及测试有关实验数据。

3D effect is analyzed and the average velocity of wave propagating in the pile, which mainly influences inverse interpretation, is discussed. Finally, the theory results are verified by model experiment. It is shown that 3D results have the same phase with ID results. The pile radius, the duration of impulse, the ratio of hammer radius to pile radius and shear velocity of the soil around the pile have influences on 3D effect. The best position of receiver is 0.55R from the pile center. The average velocity of wave propagating in the pile reduces due to transversal inertia effect and 3D effect.

结果表明:三维曲线与一维结果在相位特征上一致;波场图直观地反映了波在桩中的传播规律;三维效应与桩径、激振脉冲宽度、相对激振半径及桩周土剪切波速有关;传感器放在0.55R处可以得到干扰较小的信号;三维效应和横向惯性效应的存在会使桩中的波速减小,土的性质对波速影响不大;反演精度与缺陷的性质、激振条件有关。

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你知道吗,我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。