对流

This study presents the investigating of microchannels flow. It is divided into two parts, the flow characteristics of micro venturi and the performance of straight-walled and curved-walled micro nozzle/diffuser respectively. The experimental results are also compared with the simulation results whereby we can observe the flow field in micro venturi and discuss the bounder effect of micro nozzle/diffuser.

本文主要是针对微喷嘴的空气流场进行研究与探讨，研究分为两部分进行，分别是探讨微文氏管的流力特性及曲面微喷嘴边界对流力效能的影响，并将实验结果与CFD软体的分析结果相互比较，藉以观察微文氏管内之流场分布并探讨微喷嘴较佳之流力性能。

And Phinehas the son of Eleazar the priest said to the people of Reuben and the people of Gad and the people of Manasseh, Today we know that the LORD is in our midst, because you have not committed this breach of faith against the LORD.

祭司以利亚撒的儿子非尼哈对流便人、迦得人、玛拿西人说：「今日我们知道耶和华在我们中间，因为你们没有向他犯了这罪。

Radiative transfer equation in cartesian coordinates can be considered as a special kind of convectivediffusive equation with strong convection characteristics.

直角坐标系下的辐射传递方程可以看作一类特殊的对流扩散方程，且具有强对流特性。

Radiative transfer equation in cartesian coordinates can be considered as a special kind of convective- diffusive equation with strong convection characteristics.

直角坐标系下的辐射传递方程可以看作一类特殊的对流扩散方程，且具有强对流特性。

The result showed that the structural parameters could greatly affect the distribution of flow field and the initiation of cavitation.

研究结果表明：阀的结构参数对流场的分布和气穴的产生有较大的影响。

Numerical simulations of the three dimension viscous flow over the SUBOFF-1 model provided by DARPA and other two models are processed by solving RANS equations withκ-εtwo-equation turbulence model and finite volume method, and with SIMPLEC method for pressure-linked terms, central difference shemes for temporal derivative terms, and second-order upwind schemes for convective and diffusive terms.

本文基于RANS方程，采用κ-ε两方程湍流模型来封闭控制方程，采用有限体积法离散控制方程，对于速度压力关联方程，应用协调一致的SIMPLEC算法求解，变化率项用中心差分，对流扩散项采用二阶迎风格式，分别对DARPA提出的裸艇体SUBOFF-1模型以及另外两种回转体模型进行了数值模拟计算。

A one-sided difference approximation is used for convection terms and a second-order central difference approximation for diffusion term.

二阶一边差分逼近用于对流项的离散，二阶中心差分逼近用于扩散项的离散。

In point of the physical characters,it is better to differentiate the time derivative in the characteristic direction than intime direction.

1.4中针对流体的流动以对流为主的物理特性，采用特征线法去对时间导数项离散，使截断因子比通常的时间方向离散小得多，更好地反映了问题的物理特性。

Bacterial chemosynthesis, production of food by bacteria using energy derived from chemical changes, and advection, the drifting of food materials from surrounding regions.

第一种是细菌化学合成，即由细菌利用化学变化而形成的能量来产生食物；另一种是水平对流，即食材从周围地区飘移过来。

With introducing kinds of ways of show colour in computer and chromatology, the paper find out different math regression equation on a base of hue, brightness and saturation to describe psychological sense about different colour, and then with help of computer to describe the psychological sense.

心理视觉分析部分则介绍了计算机和色彩学的表色方法，利用色彩的色相、明度和纯度三属性，采用不同数学回归经验公式，把色彩心理视觉数字化、公式化，进而利用计算机对流行色进行视觉分析，最后得到文字解读信息。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。