内回流是分馏塔内借助内部冷却盘管使蒸气冷凝而产生的液体。
Induced reflux is liquid formed within a fractionation tower by condensation of vapors by means of an internal cooling coil.
这些集管通过空气管线与抽真空系统相连，以便从空冷凝汽器内抽走不可冷凝的气体。
These manifolds are connected to the vacuum system through air take-off lines in order to remove the non-condensable gases from the condenser.
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