诚然今天的现代社会能更好地应对公共健康危机，但另一方面，当今世界面对流行病显得更加脆弱。
Yet while today's modern world is much better prepared to deal with a public health emergency, in one respect, it is in fact more vulnerable to contagion.
通常，对流换热系数是在实验中以电加热试验管壁面后根据牛顿冷却定律计算得来的。
Normally, coefficient of convective heat transfer is gotten through experiments which is heating testing tube by electricity and computed through Newton cooling law.
论述了埋管结构对流化质量的影响，以及沸腾层燃烧份额对受热面布置的影响。
The effect of in-bed tube structure on bed fluidization as well as that of the fluid-bed combustion on heating surface arrangement is also discussed in the paper.
本文最后对采用针翅管的传热设备的实测数据进行分析来说明采用针翅管作为对流受热面所取得的实际效果。
Finally, this paper analyses the data which are measured in new heating transfer appliance with the pin fins tubes and explains the effect of using the pin fins tubes for convection heating surface.
在热水器上应采用强化燃烧方式，尽量采用对流受热面，减少辐射受热面。
Intensive combustion should be used in water heater. Heat convective surface is better than heat radiant surface for heat transfer in water heater.
考虑到前体壁面边界层厚度对流动结构的影响，提出了边界层效应的修正方法。
Taking into account the boundary layer effect on flow structure, a correct formula was given.
另一方面，电离层对流形态和晨昏对流圈的经向跨度及其两端的位置是基本不变的。
At the same time, the longitudinal range and the positions of the two boundaries of the ionospheric convection pattern remain basically unchanged.
软流圈上涌高度，莫霍面或地幔羽的位置是地幔对流的具体的表现。
The mantle convection is the primary driving force for the formation and evolution of sedimentary basins, and manifested in the position of the asthenosphere, Moho discontinuity and mantle plume.
列车速度提高可以增强车壁的对流换热系数，进而减小辐射的影响，降低壁面综合温度。
Accelerating the train speed will increase convection and cut down the influence of radiation so as to lower the integrated temperature of walls.
指出了影响锅炉对流受热面剩余寿命计算公式的应用前提，分析了由于燃煤质量的下降，造成受热面磨损的原因。
The calculate formula premise of the residual life of boiler convection heating surface is pointed out, and the cause of heating surface wearing due to the quality decline of coal is analyzed.
燃料-空气混合物的当量比为0.4，燃烧器外壁面与环境采用对流换热边界条件。
Stoichiometric ratio of fuel-air mixture is 0.4. Convection heat exchange has adopted as a boundary condition of external surface.
另一方面，对流程进行建模以及如何对已经建立的流程模型进行分析及应用的问题并没有很好的解决。
On the other hand, the problem to model the proce and to analyses and use the existing model efficiently still existing.
建立了锅炉对流受热面传热熵产的计算模型，并给出了传热熵产生数的计算公式。
The calculation model of heat transfer entropy productions of convective heating surfaces of boiler is set up, and the calculating formula of heat transfer entropy production is presented.
第三层面是以武昌造船厂为例对流程化造船组织模式的运作进行了分析，最后说明了新模式的操作性。
Take Wuchang Shipyard as example, the third level try to analyse the operation of the process-oriented shipbuilding organization model, and to note that new model is operational at last.
结果表明：当对流受热面在较长时间内不吹扫时，不会产生粘结性很强的积灰，对下一次除灰效果影响较小；
The experiment result shows that ash can not adhere to the heating surfaces firmly and there is little impact on the next sootblowing effect in case of no sootblowing in given period.
利用灌区下垫面分类明显的特点，用加权平均法解决下垫面对流域蒸散发的影响；
Weighted average method is used to study the soil cover′s effect on the evapotranspiration in irrigated watershed.
壁面粗糙度对流场中不同位置处颗粒运动影响的强弱不同，其中逆流区处较弱，下游处较强。
The effect of roughness on particle motion in the recirculation zone is weaker than that in the fully developed flow region.
通过测量表面速度和流层厚度，初步分析了流率及壁面状况对流动的影响。
Surface velocities as well as flow thickness were evaluated by means of tracer particles by which the influence of the flow rate and wall-wear was analyzed in experiment.
结果表明，坡面径流平均流速随坡度和流量的增加而增大，流速与坡度和流量之间存在指数函数关系，坡度对流速的影响大于流量。
The results show that the average flow velocity increases with the flow discharge and the slope gradient in an exponential form, and the slope gradient has greater effect on velocity than discharge.
理论分析了风筛式清选装置的筛面流场，试验研究了其主要参数对流场的影响规律，指出了简易风筛式清选装置合理的筛面气流分布类型及其获得途径。
This paper analyzed the surface flow field of the air and screen cleaning mechanism and studied the effect of main parameters on flow field.
冲蚀磨损是电站锅炉对流受热面管道泄漏的主要原因之一，占到锅炉事故的75%以上。
The erosion-abrasion, which is one of the main reasons of the leakage of the power-station boiler-conduit-pipe 'contra-flow heating-surface, accounts for 75% or more of the accidents of the boiler.
通道内气流湍流对流换热、壁面间辐射换热与隔热层内导热耦合求解。
The turbulent convection and wall radiation in channel and the thermal conduction in isolation layer are solved simultaneously.
另一方面，有助于社会对流浪儿童的认识，避免产生对这些儿童的偏见和歧视，有助于提高流浪儿童救助保护工作的社会化程度。
On the other hand, we can help society to understand street children more, and avoid producing prejudice and discrimination about street children.
根据桨叶表面流动不穿透条件解出升力面奇点后，然后再求它们对流场的扰动。
After the vortex distribution is solved according to the boundary condition of no-flow-penetrating through the blade surface, the velocity reduced by the propeller can be calculated.
要求能对流体计算域划分全六面体、四面体及棱柱体等网格类型。
The system shall be able to divide the calculation domain of fluid into all-hexahedral, tetrahedral and prism mesh type.
采用四结点四面体单元和八结点六面体等参数单元进行三维定常对流扩散方程的有限元分析。
The finite element analysis of three-dimensional steady-state convection-diffusion equation is given by using 4-node tetrahedral elements and 8-node hexahedral elements.
特殊不锈钢风道设计，利用高速热风强对流，快速消除帮面内应力，使帮面更贴楦。
Design of stainless steel air way and high-speed and strong hot air convection, quickly removing internal stress of upper and making it fit.
并比较了数值精度对流场模拟精度的影响和喉道壁面网格的圆弧度处理对流动损失的影响。
The impaction of numerical precision on the accuracy of simulated flow field is checked. Curving level of throat wall arc mesh is compared to see the effect on flow loss.
分析了自由液面在流场绕过圆柱时的变化，并分析了自由液面对流场绕过圆柱的尾迹的影响，总结流场对不同的雷诺数和弗劳德数的变化规律。
Analysed the deformation of free surface, the influence of free surface to fluid wake, concluded the rule of fluid which changed with the Reynolds number and Froude number.
热仿真方面，采用专业的网格生成软件ICEM - CFD对流道模型划分全六面体网格，实现网格合并，导入CFX中进行求解。
In thermal analysis, a professional mesh generation software ICEM-CFD is used to generate full-hexahedral grid and realize the grid assembly which is then imported to CFX to carry out the solution.
应用推荐