查询词典 fluid

The stream function equations are derived, based on the fluid equations of motion on a revolving S 1 stream surface in centrifugal pump impeller, for indirect boundary element method. The equations are suitable ideal and incompressible fluid flow with rotation or non rotation in absolute coordinate system.

根据离心泵叶轮S1流面的流体运动方程，推导了间接边界元法所需的流函数方程，它适用于不可压理想流体的绝对流动有旋或无旋流动。

If the displaced fluid is thicker than the displacement fluid, the larger the difference is, the more the blending volume of displacement and displaced fluid is.

反之，顶替液的粘度越高两者的掺混量越少。因此，注水泥过程中前置液的粘度应介于钻井液和水泥浆的粘度之间。

This paper discusses the dynamic response of beams resting on fluid withthe general asymmetric deformations assuming that the fluid resistance is related to the velocity potential of the fluid.

本文讨论了置于液体表面上的梁在一般的非对称变形模式下的塑性动力响应问题。

In ALE formulation the fluid-structure interaction analysis becomes a three-field coupling problem of the fluid field、the solid field and the fluid dynamic mesh.

其次，流体N-S方程的求解有中间速度法的三步减为直接法的两步，提高了计算效率。

The following are main contents studied: A finite element method for Navier-Stokes equation with ALE formulation is considered and by combined with theNewmark method of numerical intergration a pressure correction scheme is obtained for the solution of the FE formulation of N-S equation. Because the incompressibility condition can be satisfied approximately in this scheme, the interpolation functions of elements can be equalorder for the velocity field and pressure field. In the ALE formulation the fluid-solid interaction analysis became a three-field coupling problem of the fluid field, the solid field and the fluid dynamic mesh. The properties and charactiristices of this three-field coupling problem are deeply discussed.

研究的主要内容有：主容器中流体大晃动是一种强非线性问题，文中研究了求解ALE描述的粘性流体N-S方程的有限元方法，以有利于大晃动自由液面的跟踪和流体大晃动中非线性现象的描述；并结合Newmark数值积分法推出了求解ALE型N-S方程的压力修正解法，由于这种解法可以近似满足不可压条件，因此可以采用速度场和压力场等阶插值的有限元离散格式，从而较好地解决了普遍采用的不等阶插值解法中，速度场和压力场数值精度不一致、程序编制不便等的不足。

Apart from the working limitations resulting from its structural property, the flat plate heat pipe carries out heat dissipation through the evaporation and condensation of the working fluid. Thus, if the working angle of the fluid is adverse to its backflow, the heat pipe will fail easily. Furthermore, not the orientations of all the heat sources are favorable to the functioning of the heat pipe. To compensate for this drawback, this research focuses primarily on the development of a composite structure which will reduce the effect of gravity on the working fluid. Generally speaking, the heat pipe is divided into three main categories: the groove type, sintered metal type and mesh screen type, as shown in Table 2. As far as capillary force is concerned, the sintered metal type and mesh screen type show better performance. As mentioned in R.

平板式热管除了因其结构特性而产生的工作极限之外，由于其作用乃是透过工作流体的蒸发及凝结进行散热，故若是其工作角度不利于液体之回流，便容易使热管失效，且并非所有之发热源都是位于有利于热管工作之位置，因此本研究之主要目的为设计一可减少重力对工作流体影响之复合式结构；一般而言，热管之结构大致可分为沟槽、烧结及网格三种(如表2所示)，其中烧结及网格结构有较佳之毛细力，在 R。

In this paper, the environment of tectonism occurrence, the similarities and differences of the subsurface fluid force and tectonic stress, and the influence of the subsurface fluid and fluid force on multi-forms of tectonism are analyzed first.

分析了地壳构造变动产生的环境、构造应力与流体力的异同性以及地下流体及流体力对多种形式的构造变动的影响。

The concentric tapered pipe/reducing socket is advantageous to the fluid flow, in changes the diameter time is small to the fluid fluid state's disturbance, therefore the gas and vertical mobility's liquid pipeline use concentric tapered pipe changes a diameter.

同心异径管/大小头有利于流体流动，在变径的时候对流体流态的干扰较小，因此气体和垂直流动的液体管道使用同心异径管变径。

It is suggested that the ore deposit under study was relative to the mixing of the lowtemperature and hightemperature hydrothermal solutions.δ18O and δD values of oreforming fluid of different ore bodies are unanimous, thus indicating that fluid homogenisation once happened before the formation of oreforming fluid.

研究结果表明，该矿床的形成与中低温热液与中高温热液的混合有关；成矿流体的H、O同位素组成在不同矿体中没有明显的差别，流体形成前曾存在流体的均一化作用；成矿流体的形成是地层循环水与变质水、岩浆水在流体储库中充分混合的结果。

Only 7% of ascitic fluid cytologies are positive50 yet cytological examination is 60–90% accurate in the diagnosis of malignant ascites, especially when several hundred millilitres of fluid is tested and concentration techniques are used.12 Clinicians should liaise with their local cytology department to discuss fluid requirements before paracentesis.

只有7％的腹水细胞学检查阳性50，不过在恶性腹水的诊断中细胞学检查准确率达60-90％，尤其是当腹水检测量达数千ml并且应用浓缩技术时。12在腹穿进行前临床医生应该与本地细胞学实验室保持联络以讨论所需要的腹水量。

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。