网孔正变得如此的小以致任何东西都很难再溜出去。
The holes are getting so small that hardly anything can slip through any more.
在设计适当、操作正确的前提下，网孔塔板具有效率高、压力降小、处理能力大等特点。
Under the conditions of proper design and correct operation, the sieved tray was of high efficiency, tow pressure drop and high processing capacity.
在设计适当、操作正确的前提下，网孔塔板具有效率高、压力降小、处理能力大等特点。
Under the conditions of proper design and correct operation, the sieved tray was of high efficiency, tow pressure drop and high processing capacity.
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