查询词典 vortex flow

In addition, three-dimensional flow analysis is carried out to verify the performance improvement of the new support board. It is found that with the new support board the efficiency of the fan is improved over the entire range of mass flow, the losses are reduced and the flow in support board passage become more reasonable.

并对改进支板后的风机进行了详尽的三维数值模拟计算，计算结果表明采用改型后的支板结构使得在整个流量范围内风机的效率有所提高，支板通道中的分离漩涡等各种流动损失明显减小，支板通道的流动更加合理。

How to analyze the cyclic fluctuation of urban traffic flow theoretically, and how to determinate the cycle of urban traffic flow, those are the problems to be solved. In this paper, a study on long_term dependence of urban traffic flow based on rescaled range analysis is presented. The method is introduced,the analysis results of a case study on time_s...

论文提出用R/S分析交通流的长程相关性来研究这一问题，介绍了该方法的原理，给出了一组实际交通流时间序列的实证分析结果，从计算出的Hurst指数求出了该交通流时间序列的变化周期，讨论了有益的结论。

To reveal aft end internal flow feature of a solid rocket motor with submerged nozzle, a two dimension cold flow test model with rectangular channel was designed The cold gas simulation was based on geometric similarity and aerodynamic analogy Mean and fluctuating velocity field was measured using phase doppler particle analyzer It showed that the flow separates at upstream of the submerged nozzle and reattaches on the tip of the nozzle nose A relatively steady recirculation zone formed in...

为了揭示含潜入喷管的固体火箭发动机尾部流动特征，按照几何相近和气动相似原则设计了通道为矩形的二维冷流实验模型，利用相位多普勒粒子分析仪对燃烧室尾部气流的时均速度和湍流脉动速度进行了测量。实验结果表明气流在潜入喷管入口上游发生分离，再附点位于喷管前端部外侧，背壁空腔内形成一个较为稳定的回流区，流场的轴向和横向湍流强度都比较大

There is no agreement on the HR flow management, especially in the field of HR flow prewarning, there is none of clear standards. These make enterprises at a loss of carrying on the HR flow management.

对人力资源的流动管理更没有统一的认识，尤其是在企业人员流动状态的预警上，没有一个明确的标准，使企业在进行人力资源流动管理时无所适从。

In the paper, based on reading and studying a great number of references about fluid dynamic technique and numerical computing methods of flow field, 3-D Numerical simulations and visual analysis of the flow field in hydraulic poppet valve with inside flow work condition were obtained by CFD software Fluent.

本文在参阅大量国内外有关计算流体力学和流场数值计算方法相关资料的基础上，用CFD软件Fluent对内流工况液压锥阀内部流场进行了三维数值模拟及可视化分析。

LNV oval gear flow meter is a joint venture company with Japan Ao Baer production of high precision flow meter long life can be measured the flow of oil and water.

LNV椭圆齿轮流量计是与日本奥巴尔公司合资生产的高精度长使用寿命流量计可测油及水的流量。

R12 on the ozone layer due to the destruction of the requirements of the developed countries for environmental protection from 1996 to start using refrigerant R134a Automotive Air-conditioning and the construction of air-conditioning at home in a similar, it is often installed in the compressor engine, and with a belt drive, the condenser installed in the car in front of the radiator, and evaporator in the car inside, and work out from the evaporator of low pressure gaseous refrigerant flows through a high-pressure high-temperature gas compressor After cooling condenser cooling tube cooling into the low-temperature high-pressure liquid, through the desiccant dryers and storage of buffer, and then to a more stable flow of pressure and flow expansion valve, the final expenditure and the flow of relief evaporator.

由于R12对大气臭氧层的破坏，出于环保的要求发达国家从1996年开始改用R134a做制冷剂汽车空调的构造和家用的分体空调类似，它的压缩机往往是安装在发动机上，并用皮带驱动，冷凝器安装在汽车散热器的前方，而蒸发器在车里面，工作时从蒸发器出来的低压气态致冷剂流经压缩机变成高压高温气体，经过冷凝器散热管降温冷却变成高压低温的液体，再经过贮液干燥器除湿与缓冲，然后以较稳定的压力和流量流向膨胀阀，经节流和降压最后流向蒸发器。

The problem of noise of the fan is studied with the non-linear theory, and pressure pulsation of axial flow fan's inside flow was measured by dynamic pressure sensor, the gas-structure coupled noise of contra-rotating axial flow fan was studied through a

摘要用非线性动力学的理论对风机噪声问题进行了分析，同时运用实验手段测量了轴流风机流场内部流动的压力脉动，从全新的角度研究了对旋风机的气固耦合噪声。

The article takes this as study objective and the cash flow difference as the main theme. It first obverses the characteristics and difference of cash flow and then analyzes risks of capital flow with different nature in the group framework, based on which to build the complete supervision system.

本文以之为研究对象，以现金流的差异性为主线，首先考察了保险、银行及证券公司现金流特点与差异性，然后在集团框架内分析不同性质的资金流动风险，在此基础上设计合适的监管模式，通过设置防火墙、预警体系，构建完善的监管体系。

This paper gives the analysis about the changeable law and the cause of the produced flow pulsation on common gear wheel pump and shows the unfavourable influence of the flow pulsation on hydraulic pressure system, the concrete measures of reducing the flow pulsation to be given.

对齿轮泵瞬时流量的变化规律以及产生流量脉动的原因进行了分析，指出了流量脉动对液压系统的不利影响，提出了降低流量脉动的具体措施。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我