查询词典 convection heat transfer

Now that we have some heat, we can use this to cause convection.

既然我们有了一些热，我们就可以用这些来产生对流。

How is heat passed in the air by convection?

热量是怎样通过对流在空气中传递的？

Many natural phenomena and physical laws can be described by time dependent nonlinear differential equations, such as heat conduction equation, sound wave and elastic wave equation, reaction diffusion and convection diffusion equation, fluid and aerodynamics equations, etc.

大多数的自然现象与物理规律都可归结为与时间相关的非线性偏微分方程，诸如热传导方程、声波与弹性波方程、反应扩散与对流扩散方程、流体与气体力学方程组等发展方程。

The diffusion of mass or heat across two phases is extensively involved in chemical processes. Because of the effect of this kind of diffusion, there will be a inhomogeneous distribution of material concentration and then a gradient of interfacial tension will be occured on the interface of the two phases. When the gradient tends to a certain value, the natural convection would be induced derivatively, and orderly convective cells would appear in the system simultaneously. This is the so-called Marangoni phenomenon.

在化工过程中，广泛涉及到两相间的质量或热量扩散，由于这种扩散的作用，将在相界面处产生物质浓度的不均匀分布，从而出现界面张力梯度，这种梯度达到一定值以后，将出现派生的自然对流运动，并且在系统中呈现有序的对流胞结构，这就是所谓的Marangoni现象。

The numerical model based on energy conservation equation, takes into account of Gauss distribution, in space and time of laser spot, the finite size of sample, the temperature dependence of physical thermal properties, and the surface heat losses due to convection and radiation.

计算模型在能量平衡方程的基础上，将入射的脉冲激光在时间与空间上的分布以Gauss分布考虑，同时考虑工件尺寸、工件材料热物理性质及对流辐射造成的表面热损失等对温度场的影响。

It is important to notice that heat exchange is done radially, and not by convection from the beginning to the end of the chamber.

重要的是要看到，热交换是放射状，从一开始就不是由对流会议厅结束了。

And Lorenz equation has been used to describe the heat convection of lower layer of density current.

采用耦合映象格子模型求解Lorenz方程，并引入对流强度量判断系统分层涡旋的产生和发展。

The strong pedagogic potential of Heat Convection is enhanced by the following ancillary material ...

热对流的很强的教师的潜能被以下的辅助素材提高

The heat flux distribution of radiation and convection along the width and height of furnace in superheater and reheater zone is obtained By comparison, it can be seen that, although there is deviation between the calculation and measurement results, they are identical qualitatively.

过热器和再热器汽温分布的模拟计算结果与现场实测值进行了比较，两者在定量上尚存在一定的差距，但定性上基本一致。

Insulation: with proper installation method, in the tile roof and between the formation of a layer of air layer, convection heat.

隔 热：配合适当的安装方法，在瓦体与屋面之间形成一层空气层，对流散热。

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。