查询词典 convection current

It was shown that winter-time natural convection in the fractured-rock embankment began to occur in the side slope portions and developed from two side slope portions to the middle portion of embankment with lowering of surface temperatu...

通过引入自然对流指数，分析了自然对流降温效应随路堤碎石层填筑厚度的变化规律，其可分为恒零区、急增区和缓变区3个阶段，急增区的起点和终点对应于路堤碎石层填筑的最小厚度和最大厚度。最后，利用自然对流指数具体计算了不同粒径碎石层填筑的临界厚度。

Thicknesses of fractured-rock layer in highway embankment corresponding to the initial point and end point of the rapid increase region were defined as the minimum and maximum thicknesses of fractured-rock layer constructed, which triggered winter-time natural convection, respectively.

通过引入自然对流指数，分析了自然对流降温效应随路堤碎石层填筑厚度的变化规律，其可分为恒零区、急增区和缓变区3个阶段，急增区的起点和终点对应于路堤碎石层填筑的最小厚度和最大厚度。

Double convection heater is mixed by heater of a large area a zonule heater is formed.

双对流加热器由一个大区域加热器和一个小区域加热器组成。

Stacks additively with Convection

与传导叠加。

From the distribution of rotation period and convection parameter of M type stars, stellar chromospheric activity of M type stars depart from the anticipation of a.

对于A—早F型主序恒星的色球活动水平也随自转周期呈线性下降趋势，随Rossby数却呈上升趋势。A—早F型主序恒星的自转周期和恒星对流区的随色指数的分布明显地影响着这些恒星的色球活动行为。

And the feasibility of the two measurement methods is demonstrated.3 Computer simulation is performed in the situation of air passing by a heating columned thermistor through a round pipeline. The fluid velocity and temperature distributions under different mass flowrate are shown. They reflect the impact the heating thermistor has on the fluid. The velocity distribution on the surface of the heating thermistor is studied and the impact of natural convection is revealed. The lower limit of measurement based on the simulation result is given.

仿真实验结果给出了不同空气质量流量下加热元件周围流体的速度和温度分布，直观反映了加热元件对流动产生的影响；研究了发热元件表面流体的速度分布，揭示了由浮升力引起的自然对流对流量测量的影响，给出了测量下限值的仿真结果；并通过仿真实验数据验证了恒功率热消散式热式流量计的流量方程。

The method in this paper abandon thisreinitialization step by discreting the convection terms in governing equations usingspecial schemes borrowed from conservational law equations.

通过对控制方程中输运项离散方法的特殊处理，本文的方法屏弃了这个重新初始化步骤。

So the respiratory physiology a hydrodynamics is the base of studying how gas convect and diffuse in the hi In this paper, we introduce the physiological structure and the process of | convection and diffusion in the lung. After analyzing some kinds mathematical model, we have got a digital model through simplifying l Weible model.

本文介绍了肺体的生理结构以及气体在肺内的传输和扩散过程，通过对现有几种数学模型的分析后，在Weible肺解剖模型的基础上简化得到肺的一维喇叭口数学模型，把气体在三维空间传输和扩散问题转化为一维问题。

Study of the causes of MCS intensification and rainstorm shows that( 1) just before the heavy rains occur, there are high temperature, considerably wetness and unsteady convective stratification in the air over the rainstorm-hit area, in addition to significant increase in convectively efficient potential energy, condensation height and decrease in the height of free convection – all these favor the happening of the heavy rain,(2) the mergence of meso-βcloud clusters leads to the MCS such fast growth as to produce rainstorm,( 3) the two lines of cumuli in the north and west correspond, separately, to two convergences on the surface wind field, with stronger convergence at their meeting point responsible for such intense development of meso-βcloud cluster as to bring about torrential rains.

分析MCS加强和产生暴雨的原因表明，首先，暴雨发生前夕暴雨区域具有高温、高湿和对流性不稳定层结，并存在明显的对流有效位能增加、抬升凝结高度及自由对流高度降低的现象，有利于暴雨发生。第二，β中尺度云团之间的合并，使MCS迅速增长，产生暴雨。第三，北、西两条积云线分别与地面风场中的两条辐合线相对应，在它们交汇处的较强辐合导致β中尺度云团强烈发展产生暴雨。

Over the northern SCS, analysis results find the lower troposphere is convectively unstable during the entire onset period. The favorable atmospheric conditions for convection are attributed to low-level moisture convergence caused by the frontal southwesterly flow during the first stage, and the retreat of western Pacific subtropical high and warm-moist southwesterly flow from the Bay of Bengal during the later stages.

分析结果显示，在1998年南海夏季季风肇始发展过程中，南海北部的大气大多呈现对流不稳定的形势，第一阶段锋前西南气流造成低层强烈的水气辐合，第二阶段之后锋面远离且太平洋副热带高压东退，来自孟加拉湾的西南气流夹带大量暖湿水气使得南海北部在整个季风肇始期间都是有利於对流的状况。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。