It features that extraction liquid, strip-extraction liquor and raw material liquid flow in different layer, so resulting in short path of mass transfer, uniform film phase and high separation effect.

本发明装置可使萃取液、反萃取液和料液分别在不同层间流动，传质路径短，膜相均匀，分离效果好，适当组合的基本单元可构成具有工业实用性的系统装置。

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Aiming at the characteristic in feature extraction of cold steel strip surface defect images, a mixed feature extraction method of separable criterion based on class distance is proposed.

针对冷轧带钢表面缺陷图像特征提取的特点，提出了基于类距离可分离性判据的混合特征提取方法。

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The optimum condition of the separation enrichment by column chromatography with activated charcoal and sodium sulfite strip and extraction of trace gold with TMK-isoamyl alcohol has been studied.

本文叙述了用活性炭色层柱分离、亚硫酸钠解吸、TMK -异戊醇萃取比色测定痕量金的方法。

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