1·A new model for describing mass transfer performance in the supercritical fluid ext raction columns by continuous counter current flow was derived.
建立了描述连续逆流超临界流体萃取塔传质性能的数学模型。
2·During normal operations, the flow direction of a counter-current softener used in boiler water treatment is opposite to that of regeneration.
用于锅炉水处理的逆流软化器，运行与再生时，液流方向相反。