查询词典 message flow

The study aims at the performance of a proton exchange membrane fuel cell with interdigitated flow field, its influencing factors and feasible ways to improve it. The necessity and advantages of using interdigitated flow field were introduced. A three-dimensional, two-phase and steady-state numerical model was developed. The computational domain of the model consists of the flow channels, gas diffusion layers and catalyst layers in both anode and cathode sides and the PEM in PEM fuel cell.

为研究交指流场质子交换膜燃料电池的输出性能，分析影响其性能的因素，寻找改善其性能的可行措施，探讨了使用交指流场流道的必要性和优越性，建立了包括质子交换膜燃料电池阴极／阳极侧流道、扩散层和催化层以及质子交换膜在内的完整的稳态、三维、两相数学模型。

First, a full three-dimensional numerical model is developed, which considering not only the rib resistance to the species, but both the single- and two-phase flow and transport in the gas channels and diffusers at both the anode and cathode sides of PEM fuel cell. Two sets of boundary conditions, one for a conventional flow field and the other for an interdigitated one, are presented. A detailed discussion of the numerical techniques for the PEM fuel cell model is given with a flow diagram to provide an overview of the solution procedure using FORTRAN language.

该模型考虑了双极板上流道间的筋部对于反应气体传递阻力以及电流密度分布的影响，从而使模型具有三维特性；建模过程中进一步考虑了流道和扩散层中可能存在的液态水，从而将现有的单相流动模型拓展成为两相流动模型，因此，该模型可以同时模拟电池内部阴极、阳极侧流道和扩散层中两相流动的发生和分布情况；分别给出了平行流场燃料电池和交指型燃料电池的边界条件；详细讨论的三维模型的耦合求解算法和技巧；用实验数据验证的该模型的准确性。

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。

The chapter propounds that cash flow analysis should include the analysis of debt-paying ability, the analysis of continuous yield of cash flow ability and the evaluation of past cash flow management practice.

本章提出现金流量分析应分为偿债能力分析、持续产生现金流量能力分析和对过去现金流量活动的评价三部分，而前两部分的分析应以分析未来现金流量信息为主。

After the analytic solution of flow was found through ratiocinating and proving,a distributed flow control algorithm,flow control asynchronous algorithm based on game theory for single link,was brought forward.

仿真实验表明，FCAG-SL算法具有良好的收敛性，应用流可以获得比其他拥塞控制算法更高的效用和整个系统的效用，验证了算法的可行性和有效性。

This thesis establishes a comprehensive cash flow analysis model by reclassifying cash flow and makes a thorough revelation of the factors leading to changes in cash flow of listed corporations, thus providing more valuable informations for various users.

本文对现金流量进行了重新分类，建立了现金流量综合分析模型，深入揭示了上市公司现金流量变化的原因，从而为不同信息使用者提供了更有价值的信息。

This kind reveres"software"the level including the international standardized flow (is already included the automobile profession sales flow, also includes service flow), as well as in the management specialized knowledge; which is a barrier can not overstep in the present auto market.

这种被尊为汽车行业&软件&的水平包括国际标准化的流程(既包括销售流程，也包括服务流程)，以及管理上的专门知识，这才是目前汽车市场中难以逾越的障碍。

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。

Based on the basic theroy of fluid dynamics, this paper establishes a model of flow mechanics for turbulent flow, then uses this model to carry on a numerical simulation study on the conventional auger drill stabilizer annular flow field.

基于流体力学基本理论，本文建立了一套钻柱稳定器湍流模式力学模型，并采用该模型，对气体钻井常规螺旋钻柱稳定器环空流场进行了数值模拟研究。

Numerical simulations on the quasi-steady and unsteady flow in Aachen 1-1/2 Axial-Flow turbine stages are performed in this paper, and the influences of the rotor-stator interaction on the fluctuating velocity, flow angle, wall-pressure and loss mechanism are discussed.

本文对Aachen一级半轴流式透平进行了准定常及非定常流动的数值模拟，讨论了引发动静干涉效应的主要因素，分析了非定常效应对叶栅通道中脉动速度、气流角、型面压力分布以及损失结构的影响。

He tendered his resignation to the Prime Minister.

他向首相递了辞呈。不适合

International economy and trade,Nanking 210044

国际经济与贸易，南京 210044