研究表明，回流口截面以上区域传热以对流方式为主，底部区域则主要是逐层导热。
It is found that the convection heat transfer plays an important part in the bulk above the return flow section and the heat conduction only rises in the bottom region.
研究表明，回流口截面以上区域传热以对流方式为主，底部区域则主要是逐层导热。
It is found that the convection heat transfer plays an important part in the bulk above the return flow section and the heat conduction only rises in the bottom region.
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