流动

Biot-flow and squirt-flow are the two most important fluid flow mechanisms in porous media containing fluids.

Biot流动和喷射流动是含流体多孔隙介质中流体流动的两种重要力学机制。

Wave statistic and spectrum, characteristics of flow field under shoaling irregular waves are investigated.

对斜坡床面上不规则波浪要素及其作用下底部的流动特性进行实验观测，对波高进行统计分析和谱分析，在实验数据范围内得出斜坡上不规则波浪要素与谱的关系表达式，同时对浅化作用下不规则波浪的流动特性进行统计分析和谱分析，得到了浅化作用对不规则波浪的波高及底部流动特性影响的规律。

The flow characteristics in the flow path of emitters must be understudied roundly in order to design an emitter with high performances.But the labyrinth path was very narrow and complex,and the archetype experiment of the emitters was unreasonable both in the technology and...

通过对迷宫式流道内部流体流动特性的分析，构建了表征迷宫式流道内部流动的数学物理模型；对所选取的目前中国农业灌溉领域最为典型的三种圆柱型灌水器，借助FLUENT6.1 CFD流场软件分析平台实现了流道内部流速分布、涡量分布、紊流强度分布等流动特性的可视化，为新型灌水器流道研制提供一定理论基础。

In terms of history, 30 years' accumulation of rural labor force has laid the foundation for today's flow since 1949; in terms of reality, besides the seriously surplus labor in countryside, the household contract responsibility system shows the contradiction between a large population and limited land. To summarize, the city's economic reform uproots what hampers the rural labor flow; the mushroom of township enterprises and city's development requires the flow; the enormous income gap between rural and urban areas and between agriculture and work in cities propels it.

现实因素则极其复杂，家庭联产承包责任制的实行凸现了人多地少的矛盾和劳动力的严重过剩问题，城市经济体制的改革为农村劳动力的流动扫除了主要障碍，乡镇企业的兴起以及城市的发展必然需要农村劳动力的流动，城乡收入以及打工与务农收入的巨大反差驱动着农村劳动力的流动。

We accomplished the whole study by the following logic: according to the currency of the world grain trade flow, we constructed the grain trade gravity model and analyzed the main influential factors on the grain trade flow to promote the function of regional trade liberalization on the grain trade flow and forecast the accurate effects of the future regional trade liberalization organization on the main national grain trade varieties under the general balance frame.

全文按以下思路展开，根据世界粮食贸易流动的现状，通过构建粮食贸易引力模型，对影响粮食贸易流动的主要因素进行分析，判断区域贸易自由化对粮食贸易流动具有促进作用，进而在一般均衡的框架下预测未来可能成立的区域贸易自由化组织对我国主要粮食贸易品种的具体影响。

The histamine in the particles will increase the transmission capacity of capillary and the velocity of the tissue-fluid flow and the superficial shear stress of related mast cell will be increased, which will once again activate mast cells to discharge active substance. Part of the active substance will be absorbed by capillary and the other part will be passed by tissue fluid to a remote place and it will activate the mast cells and the capillaries there. The directional path of the tissue fluid is approximately the same as the meridian, which forms the phenomenon of feeling-along-meridian on macroscale.

脱颗中的组胺等物质会引起毛细血管壁通透性的增加，进而引起组织液流动速度的增加和肥大细胞表面的切应力加大，这样会进一步促进肥大细胞的激活，从而释放更多的活性物质，这些物质一部分被静脉端毛细血管吸收进入血液，另一部分则随着组织液的定向流动向远处，并进一步刺激远处的毛细血管和肥大细胞，而组织液的定向流动途径和传统的经络线走向基本吻合，在宏观上就构成了循经感传现象。

The cold-flow field in the gasifier chamber is studied.

本文对水煤浆气化炉喷嘴进行了简化处理，在此基础上，对气化室内的冷态流动过程进行了研究，发现：整个气化室都处于流动的回流区长度范围以内；水煤浆气化炉中，由于操作压力很高，气相密度很大，所以即使对于d〓=150μm的较大煤颗粒，其对流体的跟随特性也很好，没有发生流动特性突跃的现象；两相的最大回流速度、回流强度，颗粒相的浓度分布，以及气化室内的静压力损失等，均与气化炉的负荷、水煤浆浓度、煤粒直径、O〓在喷嘴两个流道中的分配比例。

The nozzle of the gasifier is simplified. The cold-flow field in the gasifier chamber is studied. The research shows that the chamber has recirculation along the whole length. The particles in the chamber perform a very good flowing characteristics even for the large particles of dp=150μm, and no abrupt change is observed. This is due to the operational pressure is high and the density of the gas is large there. The maximal reflux velocity of both phases, the reflux intensity, the concentrational distribution of particles, and the static pressure loss in the chamber are all related to following factors: the load of gasifier, the concentration of coal-water slurry, the diameter of the coal particle, the distribution ratio of oxygen in the two channels of the nozzle, and the angle of jet in nozzle.

本文对水煤浆气化炉喷嘴进行了简化处理，在此基础上，对气化室内的冷态流动过程进行了研究，发现：整个气化室都处于流动的回流区长度范围以内；水煤浆气化炉中，由于操作压力很高，气相密度很大，所以即使对于dp=150μm的较大煤颗粒，其对流体的跟随特性也很好，没有发生流动特性突跃的现象；两相的最大回流速度、回流强度，颗粒相的浓度分布，以及气化室内的静压力损失等，均与气化炉的负荷、水煤浆浓度、煤粒直径、O2在喷嘴两个流道中的分配比例、以及喷嘴的射流角等参数有关。

The influence of saturated FAMEs on LTFPs of BDF was investigated by changing the distribution of saturated FAMEs in the BDF from rapeseed oil. The influence of five cold-flow additives, methanol, water, glyceride, NO.0 diesel fuel(DF0), NO.-20 diesel fuel(DF-20) and ethanol on LTFPs and viscosityof methyl esters from soybean oiland rapeseed oil was researched.

研究了5种降凝剂以及共存物(如脂肪酸甘油酯、甲醇和水)对大豆油和菜籽油生物柴油低温流动性能以及黏度的影响；测定了与我国0号、-20号柴油以及乙醇调和后，生物柴油的低温流动性能和黏度；考察了降凝剂对调和油(20%菜籽油生物柴油与80% 0号或-20号柴油)低温流动性能和黏度的影响。

As a preliminary theoretical exploration, a limited series of stream function was employed to study the characteristics of the reattachment boundary layer. The tentative analysis showed that the reattachment boundary layer of the circular cylinder, so long as it began at the effective reattachment region discussed above, would be developing to its reseparated point downstream the cross section of the cylinder, which essentially gave the new idea RCDR a theoretical cycle.

本文提出的&再附—减阻&机制可表述为：柱面上扰流元件后向锐缘处诱发的流动分离，既改变了柱面压强分布格局，又破坏了柱面附近的流动状态；若扰流元件锐缘后方流动在圆柱壁面上再附，形成再附边界层，再附边界层将沿流向发展，直至越过柱面最大迎流截面之后，才从圆柱面上分离，致使分离流的尾涡区变窄，绕流阻力降低。

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。