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This invention provides a kind of superthin tube heat exchanger. Its feature is that the heat exchanger comprises hollow level header that the refrigerant can flow through, several refrigerant tubes insert in the level header, so it can distribute the refrigerant that flow in the level header.

本发明提供一种超细管道热交换器,其特征在于:上述热交换器由以下部件构成:中空的水平集管,可以使制冷剂流过;若干个垂直制冷剂管群,插在上述水平集管内,可以使在上述水平集管内流动的制冷剂得到分配;隔断,设置在上述水平集管内部的上述垂直制冷剂管之间,能够改变制冷剂的流动方向。

The experimental and numerical results show that secondary flow can be restrained by endwall boundary layer suction and the restraining mechanisms of endwall suctions in different locations are different from each other.

同时建立了可研究端壁边界层抽吸对叶栅气动特性影响的实验系统,分别对无抽吸工况和存在抽吸工况的叶栅出口流场和气动特性进行测量,并采用流动可视化技术显示叶栅壁面附近的流动图谱。

When body and mind are receptive and open, then the spirit can become a functioning shuttle or communicator from the entity's individual energy of will upwards, and from the streamings of the creative fire and wind downwards.

当身体与心智处于接纳和开启的状态,灵性变成一个有效的穿梭载具或者通讯者,依靠它--实体意志的个体能量向上流动,依靠它--创化性的火与风向下流动

Using the finite element method and based on finite element simulation of profile extrusion process, the effect of local extrusion ratio, die land area and the distance between extrusion cylinder center and die opening center on mental flow velocity is studied. The deformation flow laws on profile extrusion process are obtained.

本文采用有限元方法,以型材挤压过程的有限元模拟为基础,研究了局部挤压比、挤压带面积和模孔距离对金属流动速度的影响,获得了型材挤压过程的变形流动规律。

The structure composition adopted in the method are all established through experiments,including oxidant of ozone generated by ozone generator with electrolytic type, samplingmode by Flow Injection, Detecting System by Chemiluminescence. Based on the structurecomposition, the paper analyzed ozone generator with electrolytic type, includingthe method of generating steady concentration and raise oxidative degree.

在结构基础上分析了电解式臭氧发生器产生稳定浓度和提高氧化能力的方法,通过加入臭氧溶液平衡室,在动态平衡条件下,使臭氧溶液在UV灯条件下,产生稳定组成氧化剂—O_3和羟基自由基;分析了采样系统—流动注射的流动条件以及试剂浓度,包括羟基自由基消除试剂碳酸氢钠溶液、臭氧氧化发光试剂鲁米诺溶液、金属离子化学发光干扰屏蔽试剂钴离子溶液等;分析了化学发光检测与数据处理系统信号采集以及误差消除方法。

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。

Performance was compared with single rotor and fan with support board, and flow analyzed in support passage. The support board was found to have significant impact on the performance of axial-flow fan, and there were complex flow separate and second flow in the support board passage.

对单叶轮风机性能同有支板的风机性能进行比较,以及对风机动叶及支板通道中的流动情况进行了分析,结果表明支板对风机的性能有着较大的影响,支板通道内存在复杂的气流分离漩涡和二次流动等。

Through the angle of culture, the business of Wuyi tea in Russia between 18th century and the middle of 19th, is not only the expansion of business route, the channel of wealth, and the transformation of European daily life, but also a process in which this business has acquired a new authenticity after the object leaves its original soil and remoulds in the foreign context.

从文化视野里来看18-19世纪中叶的武夷茶叶在俄罗斯的商贸流动,它就不仅仅只是一条商路的拓展、财源的通道或者仅仅是欧洲日常生活习惯的改变,而应将其向海外的流动视为物质离开其原生型土壤,经过异域语境的重塑后而获得一种新的&本真性&的过程

In the part of positive study, firstly, on the basis of the estimates of agricultural produce sales and other key statistics, according to the calculating system of inter-sector capital flow by Fei and Ranis(1964), we calculate in two periods the capital flow of assets between agricultural and non-agricultural sectors.

在实证研究部分,首先在对农产品销售额等关键数据估算的基础上,根据费景汉和拉尼斯(1964)提出的部门间资本流动的核算体系,分两个阶段测算了中国农业和非农部门间实物形态的资本流动

Accoding to the gained velocity and pressure fabric, fluids' flow mechanism in the flow channel was researched, and the effects of changes of many parameters such as geometical, material and processing parameters on the flow field's pressure and velocity fabric in the flow channel of pipe die for extrusion were analyzed and discussed.

代入管材常用挤出塑料的参数,利用ANSYS有限元软件进行了三维流场计算,对物料在流道内的流动过程进行了模拟,求出了流场的速度分布和压力分布,研究了物料在机头流道内的流动机理。

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And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47:5 法老对约瑟说,你父亲和你弟兄们到你这里来了。

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Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...

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