流动

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。

Net Working Capital - Equal to Current Assets (e.g. cash, inventory, accounts receivable) less Current Liabilities (e.g. accounts payable, accrued expenses).

净营运资本–等于流动资产（如现金、库存、应收帐款）减去流动负债。

The increase of these current assets are deducted from net income, the increase of current liabilities such as accounts payable, accrued liabilities, income taxes payable are added to net income.

相应地，这些流动资产的增加额要从净收益中减去，像应付账款、应计负债、应付所得税等流动负债的增加额要加到净收益上。

A quasi three dimensional numerical method is developed for predicting the steam flow and heat transfer behavior of condenser. It is applied to a one pass large power plant condenser.

为了研究凝汽器流动与传热特性沿轴向的变化，文中发展出一个凝汽器汽相流动与传热特性的准三维数值计算方法，应用该方法对一大型凝汽器汽相流动与传热特性进行了数值模拟。

The theoretical development of internal flow of turbomachinery is then summarized in terms of separation theory, vortex dynamics and flow pattern.

然后分别从分离流动理论、涡动力学和叶轮机械流型三个层次介绍叶轮机械内部流动理论的发展；从平面叶栅、环形叶栅、动态试验和试验技术等方面回顾叶轮机械试验研究进展；从控制方程、数值方法、网格生成等方面综述叶轮机械数值计算研究方法、研究内容及成果等，并概括改善叶轮机械气动性能的方法和现状。最后对叶轮机械内部流动研究进行展望。

In this paper, a full flow model is given for calculating the average residence time of molten steel in non-symmetry multi-strand tundish to analyze flow pattern, the model is as follow:〓 The model can be used to calculate the volume fraction of the dead area、the piston flow and the mix flow, and is satisfactorily applied to the water model of three-strand tundish of Guangzhou Steel Works to analyze the data of the experiment.

本文认为在研究中间包内高温钢水的流动问题时，应该考虑钢水密度变化这个条件对钢水流动的影响，这样其结果更符合实际钢水流动规律。本文针对非对称多流中间包，提出了全流量模型计算多流中间包钢水平均停留时间：〓该模型也能够很好地计算多流中间包的死区、活塞流区、全混流区体积分数。

During the opening and shutting-in process of gas well, the gas flowing within the borehole is transient, where the flowing parameters including the pressure and temperature of the gas are the functions of well depth and time.

气井开关井过程中，井筒内气体的流动为瞬变流动，其压力等流动参数是井深和时间的函数。

Since the interface is treated as an internal flow field so it can accurately keep the conservation of flow variables on the sliding interface. Both laminar and turbulent unsteady rotor/stator interaction of a turbine stage with arbitrary pitch ratio are calculated successfully.

成功地计算了小雷诺数工况下具有任意栅距比的轴流动/静相干叶排内部非定常层流流动，及采用标准K-ε两方程模型对较大雷诺数工况下动/静相干轴流叶排内部非定常紊流流动进行了数值分析。

Microminiaturization of characteristic scales makes flow behavior of polymer melt in micro-channel different from that in macro-channel, some factors, which could be neglected in macro flow, may become important roles in micro scales.

特征尺寸的微小化使得流动通道中的聚合物熔体的流动行为不同于宏观流体，宏观流动中可被忽略的因素，可能成为微尺度下的主要影响因素。

Therefore, persons of upward social mobility are more influenced by structural factors and personal social and economic factors; persons of downward social mobility and horizontal social mobility are more influenced by life cycle needs, such as marital change.

因此，上升社会流动者受到结构性因素和个人社会经济地位因素影响最大，而下降社会流动者和水平社会流动者受婚姻状况改变等个人生命周期需求因素的影响最大。

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。