对流

Focusing on practical application, finite element simulation technology was discussed for engineering structures applied with combined temperature and vibration environment, including solution of temperature field with convectional boundary condition, thermal stress computation, forming of prestress stiffness matrix, analysis of response power spectrum et al.

从工程应用的角度，探讨温度与随机振动载荷作用下结构动态响应的有限元分析技术，包括对流边界条件下温度场的求解、热应力计算、预应力刚度矩阵的建立、响应功率谱分析等。

Both theory and practice analysis illustrate that stronger divergence field results from uneven distributed horizontal wind field on the right when high level current axis slopes. Owing to convectional wind convergence at low level responds to high level divergence and leads to storm.

理论和实际分析均表明：高空急流轴一旦发生倾斜，则由于其出口区水平风场的分布不均匀势必会在倾斜急流轴出口区的右侧产生较强的辐散场，由于对流风的作用，低层辐合必然会对高层辐散产生响应，诱发暴雨发生。

The magnetic merging line is constructed by minimum points of magnetic field strength along a large number of last closed magnetic field lines and several properly selected last closed field lines,whereas the radial ray integration of convectional electric field is used to calculate the electric potential on the merging line.

磁合并线由大量地磁场最外闭合力线的最小磁场点和若干合适选择的最外闭合力线连接而成，合并线上的电势分布通过沿径向射线积分对流电场获得。

The back-plate works as a heatspreader over components on the reverse-side of the PCB, especially drawing heat from the area behind the GPU, it is highly perforated and attracts convectional air-flow.

背面板工程作为一个多组件散热片上的背面的电路板，尤其是从该地区绘画热背后的图形处理器，这是非常穿孔，吸引对流气流。

Integrated gasification combined cycle is one of the trends of clean coal power generation technology. However, that alkali metal vapors contained in the syngas which are generated from coal gasifier easily deposit on the surfaces of convectional syngas cooler will not only lead to slagging, but also will cause high-temperature corrosion of gas turbine blades.

整体煤气化联合循环(integrated gasification combined cycle，IGCC)发电技术是洁净煤发电新技术的发展方向之一，但煤气化释放出的碱金属蒸气易在对流废锅中形成污垢，而且会引起燃气轮机叶片的高温腐蚀。

The results show that the dynamic force and thermal conditions of forming the squall line were the convergence of cold air from Mongolia cold vortex and the warm-humid air current before west trough to form the convectional system at moderate 3 scale; the rapid development and southward shift of MβCSs was caused by a strong unstable stratification and the shear line of suitable vertical wind; a heavy hail occurred after a vertical liquid water content over 65 kg/m^2 was firstly measured by weather radar; a sharp reduction of VIL indicates that a disaster strong wind will occur at soon.

结果表明：蒙古冷涡旋转下甩冷空气与西风槽前的暖湿气流汇合，形成中p尺度的对流系统是飑线形成的前期动力和热力条件；强的不稳定层结和合适的垂直风切变导致了MβCSs的迅速发展和南压；在天气雷达首次观测到垂直液态水含量值超过65kg/平方公尺后2h内出现了大冰雹；垂直液态水含量的突然减小标志着灾害性大风的开始。

Convectional baking (Top/bottom +fan).

对流循环烘烤。

ABSTRACT The convective heat mass transfer in porous media has been studied theoretically and experimentally in this paper.

本文对多孔介质中的对流传热传质问题进行了理论和实验研究。

It appears that improvement of convective heat transfer is very important for enhancement of flux and heat efficiency.

结果表明，提高对流传热系数是提高膜蒸馏热效率和渗透通量的关键。

Low medium temperature geothermal systems of convective type are widely distributed in nature and in China.

中低温对流型地热系统在自然界和我国有着广泛的分布。

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％。