流

In this paper,the Newtonian fluid model was used to describe rheological property of the produced fluid,and motion equation of unsteady flow of Newtonian fluid in eccentric annulus with the inner cylinder reciprocating axially was transformed by means of the method of undetermined coefficients.

采用Newton流体模式描述油井产出液的流变性，利用待定系数法变换Newton流体在内管做轴向往复运动的偏心环空中非定常流的运动方程，建立给定流量下Newton流体在内管做轴向往复运动的偏心环空中非定常流的压力梯度计算公式，并利用有限体积法对压力梯度进行数值计算。

In the airfoil design for potential flow using conformal mapping technique, the metric coefficient was written as the analytical form.

在应用保角转绘技术的位流翼型设计中，研究了保角转绘网格中度规系数的解析表达；推导了将保角转绘模还原为翼型坐标的计算公式，而且将AF3算法用于位流方程的伴随方程的求解中，并在位流翼型的设计中得到了验证。

The macroscopic rheological parameters and microstructure parameters were closely related, it is helpful to explain the essence of multiple rheological properties through the analysis of which the wax evolution process and microstructure of the crude oil which is waxy and high viscosity; the yield time of gelled waxy crude oil monotone increases along with the decreasing of rate of shear (the time of stress effect prolonged), there was power function relationship between them, it can be expressed with ; when adding diesel oil to Sudan crude oil, dilute proportion bigger the eccentricity degree of paraffin particles were bigger too, that was to say the symmetry of wax crystal was better, the wax crystal form fabric more hardly when the intermolecular interaction was smaller; in the light of macroscopica, the fall extent of the abnormity temperature, solidifying point and viscosity could be larger along with the accretion of dilute proportion, as a result, it's rheological properties could be improved.

SD原油析蜡点为94℃，析蜡高峰为50～30℃，异常点为40℃；其蜡晶颗粒细小、对称性差，所以具有较大的比表面能，容易形成联生、联锁结构；损耗角曲线与储能模量曲线或损耗模量曲线的交点所对应的温度与原油凝点或倾点温度非常接近，大约在39℃左右；也就是说，含蜡原油粘弹特性曲线的交点可以表征其流动性；原油宏观流变参数与微观结构参数密切相关，原油析蜡过程及蜡晶微观结构分析有助于诠释易凝高粘原油多重流变特性的本质；胶凝含蜡原油的屈服时间随剪切速率的降低而单调增加，二者显然存在幂函数关系，可用关系式描述；当SD原油加柴油稀释处理时，稀释比越高，蜡晶颗粒的偏心度也越大，亦即蜡晶对称性越好，分子间作用力越小，蜡晶颗粒越不易形成结构，宏观表现为异常点、凝点及表观粘度等流变参数下降的幅度越大，流动性越好。

The boundary condition of small scope is provided by the computation result of large scope, and the computation is also stable after two periods. The computation of temperature field begins and it is stable after six periods. The computation is conducted at three different tide levels, including spring tide, still tide and neap tide.

大范围的流场计算在两个周期后达到稳定，开始计算小范围的流场，小范围的边界条件由大范围计算结果提供，小范围的流场在计算后两个周期后达到稳定，开始计算小范围的温度场，温度场的计算在六个周期后达到稳定。

The boundary condition of small scope is provided by the computation result of large scope, and the computation is also stable after two periods. The computation of temperature field begins and it is stable after six periods. The computation is conducted at three different tide levels, including spring tide, still tideand neap tide.

大范围的流场计算在两个周期后达到稳定，开始计算小范围的流场，小范围的边界条件由大范围计算结果提供，小范围的流场在计算后两个周期后达到稳定，开始计算小范围的温度场，温度场的计算在六个周期后达到稳定。

The 1st chapter introduced the sourse of research work, pointed out the necessariness and meaning of study, and discussed the domestic and international present situation and existent problems in the development of Dynamic Traffic Flow Information Collection Systems in ATMS, carried out brief introduction for the major content of dissertation, and have designed the route of research technology.

全文共分七章，其中第四章、第五章和第六章是全文研究的重点。第一章是绪论。本章首先介绍了论文的课题来源，提出了对动态交通流信息采集系统进行研究的必要性和意义，探讨了国内外服务于ATMS的动态交通流信息采集系统发展现状和存在问题，对论文研究的主要内容进行简要介绍，并设计了论文的研究技术路线。第二章是动态交通流信息采集系统结构设计。

Numerous impermeable underground structures exist in urban seepage field. Since the corner of the structure is singular point and the dimension of the structure is negligibly small compared with the whole urban seepage field, it is difficult to model seepage field in urban area with existing methods.

城区渗流场中地下阻水结构物众多，由于结构物角点为奇异点，而且结构物的尺寸跟整个渗流场的尺寸相比起来非常小，这导致现有的计算方法难以对城区渗流场进行模拟分析。

Formalize the base conception and property of Function Net, and describe the fundamental structure of it.

针对传统技术的局限性，提出了工作流环境，工作流运行的全局限制和相关限制的概念和定义，形式化描述了全局限制和相关限制图，并借助时间分割概念，以功能网为工具进行分析和推导，提出工作流执行的正确性保证准则，并证明了准则的正确性。

The tailward flow is most strong near the equator, and stronger in the duskside and dawnside than that in the nightside.

尾向流在赤道面附近最强，在夜侧较晨昏两侧强；尾向流有从晨昏两侧向夜侧运动的趋势；尾向流随距地球距离增加而逐渐增强。

It introduces the method of measuring theparameter of the multiphase flow, the familiar the equipment measuring the multiphase flow,analyzed contrastively the plan based corrrlation measurement and nondisjunction and basedgas- liquid adaptive cylindrical cyclone, the paper chooses the last one for the research plan.

介绍了多相流参数测量的方法；介绍了常见的多相流测量装置；对比分析了基于相关测量的不分离的测量方案和基于小型管柱式气液旋流自适应分离的分离测量方案，选择了后一种方案作为本文的研究方案。

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。