流动

The flow properties of the polypropylene and polyethylene were studied using Archimedes spiral and square spiral melt fluidity test molds, which had the same shape of cross section but different cavity profiles, and then relationship between melt flow ratio and cavity profile was analyzed.

摘 要：对聚丙烯和聚乙烯 2种塑料在阿基米德螺旋线与方形螺旋线流动性测试模具中的流动性能进行研究，分析塑料流动比与型腔轮廓特征的关系；引入修正系数β，对流动比校核公式进行修正。

Current assets viability analysis: an indicator reflecting the current assets turnover mainly accounts receivable turnover, inventory turnover, asset turnover and mobility.

流动资产营运能力分析：反映流动资产周转情况的指标主要有应收账款周转率、存货周转率和流动资产周转率。

Applying the law of conservation of mass,movement theorem of steady flow , and applying the mathematical method of stream function with the consideration of the axis symmetry,the three components of velocity quantum of the flow are deduced in detail.

本文详细阐述了旋风分离器内流动在球坐标系中的数学表述和结果，应用质量守恒定律和定常流动的运动定律，在轴对称的考虑下，用流函数方法详尽推导了流动的三个速度分量。

Abstract］ objective to evaluate the effect of regulating bloodmobile sterilization management.methods making a statistical contrast to the number of bacterial in the air flow,on object surface in the bloodmobile car before and after regulating sterilization management.results before regulating management,the total excess rate of bacteria in the air is 41.67% while the rate of object surface is 20.83% in the car.after regulating management,the total excess rate of bacteria in the air is 4.17% while the rate of object surface is 0.00%.the differences were significant.conclusion to realize regulative and effective sterilization management,consolidate sterilization measures,guarantee the quality of blood and the safety of blood collection is of important significance.

摘要］ 目的评价规范流动采血车消毒灭菌管理的效果。方法对流动采血车内的空气、物表在规范消毒灭菌管理前后细菌培养数量的统计对比。结果规范管理前车内空气细菌总数超标率达41.67%，物表达20.83%。而规范管理后车内空气细菌超标率是4.17%，物表细菌超标率是0，差异有统计学意义。结论对流动采血车实施规范有效的消毒灭菌管理，务实消毒灭菌措施，对保证血液质量和采血安全具有重要的意义。

Shames' book provides an especially clear link between the basics of fluid flow and advanced courses such compressible flow or viscous fluid flow.

Shamesbook提供在易流动的流动的基础和这样的可压缩的流动或者黏性流体流出的先进的课程之间的特别清楚的连接。

The instability originated in the upper R_B-like convection zone develops to larger region with the increase of Grashof number, and the number of non-axi-symmetric circulations decreases. When Grashof number exceeds another critical value, cooling air may invade the cavity and flow toward the shroud, the circulations decrease to one pair occupying the whole cavity in radial, thus these two zones are merged into one. The core structures in the cavity rotate against the disks, while the structures keep no change at the case of periodic oscillatory flow. With the Grashof number rises, the flow undergoes stable, periodic, periodic with cool air invading, quasi-periodic and ultimately to chaos.

离心浮升力是造成非等温轴向通流旋转盘腔内流动不稳定的主要因素，而哥氏力的存在加剧了流动不稳定性，导致流场失稳提前发生，而且在哥氏力的作用下流线发生偏转，盘腔内r-θ面出现了旋向相反的对涡，流动结构更加复杂化；随离心浮升力的继续增加，r-θ面的对涡减少，当其超过某一临界值后部分冷流体侵入盘腔，对涡减少至一对，而且沿径向充满整个盘腔；此后随离心浮升力的增加对涡的数量不再变化；r-θ面的对涡相对于盘面周向移动，但是形状基本保持不变。

ABSTRACTIn this paper, the characteristics of velocity fields and concentration fields of jets at different velocity ratios in counterflow and coflow ambient are studied in detail. The preliminary results of velocity fields of jet in reciprocating ambient are also acquired.

本文对反向流动、同向流动环境中不同流速比下射流的流速场特性和浓度场特性进行了研究，并对往复流动环境中射流的流速场特性进行了初步探讨。

The theoretic formulas for cross correlation analysis were derived. 2. According to the frozen model, a transit model and expression formula of flow noise were got. Parameter estimation algorithm was applied in calculating of cross correlation function.

根据凝固模型，建立了流动噪声信号的传递模型，推导出凝固模型时的传递函数的表达式；对两种流动模型情况下，流动噪声的传递进行理论和仿真研究，仿真表明，尽管参数估计法可以消除传感器的涂污现象，但计算量大，速度慢，不能满足实时测量的要求。

Mobile Enterprise liquidity ratio is the ratio of current assets to current liabilities ratio.

流动比率是企业流动资产与流动负债的比率。

Since 90 decane Department of Health have make lots efforts, to make the woman child service of transient population of health protection.

随着我市城市建设的需要，外来流动人口的比例会越来越高。20世纪90年代以来，全市各级卫生部门奋发努力，为做好流动人口妇女儿童卫生保健服务做了大量工作，较好地促进了流动人口妇女儿童卫生保健事业的发展。

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。