计算结果表明，高温钢水在中间包内流动时，不能忽略自然对流流动；
The calculated results show that the natural convection shouldn′t be neglected for molten steel flowing in tundish because of heat loss.
激光深熔焊接的传热过程包括热传导和焊接熔池内熔融材料的对流流动。
The heat transfer in laser deep penetration welding includes heat conduction and convection in the welding pool.
实验结果表明，硬脂酸锌粉粒是显示空气自然对流流动的比较理想材料。
Zinc stearate particles has proved out to be a good trace material for visual display of natural convection flow pattern in enclosure.
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