为了通过高液量，塔板设计的关键是降液管结构、尺寸和布置。
The key factors for designing the tray with high liquid capacity are downcomer configuration, specifications and layout.
复合塔板不设降液管，气液同时逆流穿过筛孔。
The compound tray has no down comer, gas and liquid counter flow through the holes of on the tray.
采用降膜理论建立了板波纹填料的持液量模型。
A new method was presented according to the theory of falling film to calculate the holdup in structured packing.
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