环流

In this paper, a kind of finite algorithm to seek the optimal citculation in digraph is proposed.

本文提出一种在有向图中求最优环流的有限算法。

Building of the operation rules of curl and divergence for vector field in R 3 space;2. Analysing by mathematics and the concepts of flux and curl , we can get the differential form of gauss s theorems in electrostatic field and ampere s cycle theorem in electrostatic field.

电动力学中的内容一般是从电磁学最基本的实验规律出发，由静电场中的库仑定律得到静电场的高斯定理和环路定理，利用通量与散度、环流与旋度的关系，得到静电场的高斯定理和坏路定理的微分形式。

Based on the analysis of the fluid flow in the downcomer of an airlift internal loop bioreactor , a turbulent two-fluid model for airlift internal loop was proposed.

在对气升式内环流生物反应器内部流动分析基础上，全面考虑反应器下降管中气泡的并聚破碎、气液两相间相互作用和滑移等，建立了能描述反应器下降管中复杂流动的CFD数学模型。

Multiphase loop reactors, in which the liquid is circulated mainly by the difference of the density between the riser and downcomer but not driven by the expensive and complex pump, present a lot of advantages for the coal direct liquefaction technology.

本文研究三相连续环流反应器的传质及混合特性，以期为这类反应器的放大、设计和操作提供基础依据，这对于煤直接液化工艺的应用也具有重要的指导意义。

Because of technical strength and a strong financial background, coupled with all the employees work hard, factory since its establishment has developed full-automatic hot fuel, hot coal-fired fully automatic, semi-automatic coal heating machines, greenhouse, plant with big fan , livestock fans, high-density drencher, roof fan, CAD optimization, such as circulation fans more than 60 kinds of products, and to establish from the product development, research, project design, selection of matching family of installation and commissioning, service one-stop system.

由于技术力量和资金雄厚，加上全体职工的奋发努力，本厂自成立后已研制开发出全自动燃油热风机、全自动燃煤热风机、半自动燃煤加温机、温室、厂房用大风机、畜牧风机、高密度水帘、屋顶风机、CAD优化环流风机等60多种产品，并建立了从产品开发、研制、工程项目设计、选型配套系列安装调试、服务一条龙体系。

Specific tasks were mainly stimulating twin-tangential annular deflector gas distributor in Φ7400mm packed column, and studying effect of its structure parameters on the flow distribution and the press drop of the distributor.

具体工作主要有对Φ7400mm填料塔双切向环流气体分布器，进行了一系列的模拟计算，来考察其结构参数对分布器流场均布性能和压降的影响。

The distributor plate at the bottom of the column. A constant high flow rate and head of water in the column and at the eductor inlet is maintained by circulating it through a pump and storage tank, in a closed loop.

用内环流中的泵和储水罐中的循环水来维持气馏柱和喷射口部分恒定的高速水流。

Under the influence of tropical monsoon climate, the foehn effect of the rain shadow field of the Changshan Mountains and the Wuzhishan Mountains and the cold ocean current in the Beibu Gulf, it is developed into the semi-ari d climate and the environment of dry grasslands with sparse trees.

在大气环流、雨影区和海流的共同影响下，岛西形成热带半干旱气候和热带稀树草原环境，孕育并存在自然沙漠化发展的动力、空间和物质基础。

The evolution of frontal rainbands happening during the frontogenesis induced by deformation field is investigated through the numerical cloud model. Besides, in order to get insight from the results of numerical simulations, the semigeostrophic frontogenesis model is used to investigate the effect of diabatic heating on the frontogenesis and the analytical method of WKBJ is used to study the influence of large-scale deformation field and frontal circulation on the development of symmetric disturbance happened in the frontal zone.

为了加深对数值模拟结果的理解，还利用半地转模式对非绝热加热影响锋生的过程进行了讨论，通过WKBJ方法讨论了变形场锋生条件下对称扰动的发展，从中可以了解大尺度变形场和锋生环流对中尺度扰动的作用，这方面的工作可以对前面非静力数值模拟结果的理解提供帮助。

This indicates that the importance of surface friction on the structure of front in boundary layer. Probably this is the first time that the structure similar to the gravity current is obtained in deformation frontogenesis model. On the problem of moist physical processes on the frontal rainbands, by using the explicit cloud physical scheme in cloud model the interactions of cloud scale processes with the frontogenetical circulation are studied emphatically.

在湿物理过程对锋面的影响以及锋面雨带产生问题上，利用云模式的显式云物理方案处理湿物理过程，在考虑到大尺度气流影响的情况下，着重研究中尺度和云尺度过程与锋生环流的相互作用，讨论了变形场锋生条件下锋面雨带的发生发展规律。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。