并流

To realize the parametrical design of pipe die for extrusion, a parametrical design language with friendly graphic user interface was combined with the APDL language (Ansys Parametric Design Language) provided by ANSYS software, and then the flow fields was analyzed.

本课题为机头设计提供了一种方法，即利用具有良好图形用户界面的参数化设计语言，结合ANSYS有限元软件自带的APDL（Ansys Parametric Design Language）语言，实现了芯棒式管材挤出机头流道的参数化设计，并利用ANSYS有限元分析软件对其流场进行模拟计算和分析，以获得较为适宜的机头几何参数。

In this paper, different methods of preparation about magnetorheological fluids are introduced, including mechanical crushing, wet chemical depositing, anion exchange, pyrolyzing; some main applications of magnet...

介绍了制备磁性流体的几种不同的方法：机械粉碎法、湿式化学共沉法、阴离子交换树脂法和热分解法；介绍了磁流变技术在密封、阻尼器、抛光装置等工程上的一些主要应用，并展望了磁流变技术在建筑、航天等领域的应用前景。

This text expanded the magnetoelastic stability issue of current-carrying component from coil , pole piece to thin current-carrying plates, and used special function to differentiate the critical state of losing magnetoelastic steady, the number value of getting the relevant parameter is solved .

本文将载流构件磁弹性稳定问题由线圈、杆件拓展到载流薄板，并引入特殊函数判别磁弹性稳定问题的失稳临界状态，得到了相关参量的数值关系。

With calculated flow field, adopting Lagrange model, obtain motion equations of water pedicles in separate-stage by simplification, and calculated rnotion tracks of water pedicles.

在计算的流场基础上，采用Lagrange法，经过简化，推导出了水滴运动方程并研究了水滴在流场内的运动情况，计算了水滴的运动轨迹。

The results show that increasing the pressure in flow system by using a back pressure coil is the simplest way to eliminate air bubbles.

讨论了消除流路体系中气泡的方法，指出用反压圈增大流路体系的压强是消除气泡干扰最简便的方法，并列举了用反压圈消除气泡的实例。

The analysis shows that with given grid size higher accurate difference scheme can give higher resolutions with wider range of scales, or with given accuracy large grid size can be used for the higher accurate difference scheme. The second part is the numerical simulation of two-dimensional axisymmetric jet. The simulation results show the structure in the near field and the initial transition. In the near field, Kelvin-Helmholtz instability leads to the formation of vortex ring, and nonlinear growth leads to the merging of vortex ring. This is the main instability form. Under the assumption of axisymmetry and two-dimensional computing conditions, the results are applicable only in the near field.

第二部分采用高精度的差分格式对二维轴对称射流进行了数值模拟，模拟结果显示了射流流场结构和涡结构的发展过程，在射流流场近区，K-H失稳导致涡环的产生以及非线性效应的增长导致涡环的对并是射流失稳的主要形式；分析指出在轴对称假设下的射流数值模拟只适用于射流近区的分析。

3The transience multiphase flow software was employed for simulating pipeline's slug flow behavior in this paper. The computational results of OLGA have been interpretted by relevant theory.The changes of pressure and holdup in the slug flow analyzed were explained, and its inherent regularity was also revealed in detail.Through which, the cause to slug flow was found out, and the flow type of slug could be suppress or controlled effectively.

3采用瞬态多相流软件对管道流动特性进行模拟研究，用相关理论解释OLGA软件的计算结果，主要针对段塞流压力、持液率的变化规律进行分析，详尽地揭示其内在规律，确定段塞流产生的原因，并进行模拟控制调节。

This design uses AT89C51 SCM chip controls the charging process, achieving A/D convert and show circuit. The battery voltage information can be detected by the external circuit to choose the correct charge mode, realizing the intelligent conversion mode of the trickle charge, the constant current charging, the constant voltage charging and the float charge.

采用AT89C51单片机芯片作为充电过程的控制芯片进行电路设计，实现A/D转换和显示电路，并根据外部电路检测到的电池电压信息选择正确的充电模式，实现在涓流、恒流、恒压及浮充电模式之间的智能转换。

The reaction and influence involving the mechanism of crystal and the interior flow field was developed when impeller machine transferring bittern .Based on the measurement through PIV and numerical simulation,the reason that deposition mass rate and removal mass rate is changed along with the increase of crystal layer was analyzed. Moreover,the viewpoint was developed that the change is the result of the reaction among temperature gradient,velocity gradient,turbulent intensity and the temperature stress within the crystal layer.

提出叶轮机械输送卤水时，结盐过程与内部流场相关且相互影响、相互作用，并在进行PIV内流测试和数值模拟的基础之上，综合运用多学科理论，依据Kern-Seaton模型，分析了沉积率与脱除率随盐析层增长而发生变化的原因，提出了这种变化是温度梯度、速度梯度、湍动度及盐析层内部温度应力等各种因素交叉影响的结果。

This experiment unified flow cytometry, the monoclonal antibody technology, the cell fluorescence chemistry technology and unilized the union principle of antigen and antibody to examine T lymphocyte subgroup, the B lymphocyte change in circumference blood of the mice through the flow cytometry; At the same time, the agarose gelatin electrophoresis examined bovine colostrum effect on programmed cell death of thymus.

本实验正是将流式细胞术、单克隆抗体技术、细胞荧光化学技术相结合，并利用抗原抗体结合原理，采用流式细胞仪检测了小鼠外周血的T淋巴细胞亚群和B淋巴细胞；同时采用琼脂糖凝胶电泳技术检测了牛初乳对小鼠胸腺细胞凋亡的影响。

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。