所述顶盖上设有冷凝片，冷凝片位于蒸汽入口的上部。
A condensing sheet is arranged on the top cover, and is located on the upper portion of the steam inlet.
换热器蒸汽入口和出口温差小，压差小，管程传热面积大。
There are small temperature and pressure difference in steam inlet and outlet of heat exchanger, and big heat transfer surface.
结果表明入口蒸汽压力和过冷水温度是影响汽羽形状的主要因素。
The results indicated that the shape of steam plume was influenced by the inlet steam pressure and subcooled water temperature.
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