以下为句子列表：
英文: The separation and enrichment of zinc as a necessary pretreatment in its determination covering recent years, pertaining especially to the methods of liquid membrane separation, are reviewed.
中文: 摘要就近年来国内外富集分离的方法进行了综述，着重介绍液膜分离法。
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英文: The Liquid Membrane Coupled Transport of Electron- Cation Symport with Calixarene Derivatives and [Ni(dmit)_] Complex as Cooperating Carriers
中文: 杯芳烃衍生物对K~+和电子的耦合液膜传输
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