Black tea extracts are normally produced by a hot or boiling water extraction process usually a countercurrent process.
红茶的提取物通常是用热水或沸水通过逆流萃取工艺来制取的。
The separation ofm-chloroaniline and p-chloroaniline was carried out by countercurrent dissociation extraction(CDE).
逆流解离萃取通过套用萃取酸分离间氯苯胺及对氯苯胺。
The process for concentrating natural vitamin E in the dual-column continuous countercurrent supercritical extraction is studied.
探讨了双塔连续逆流操作的超临界萃取和浓缩天然维生素E的工艺路线。
A new method of tea extraction was introduced, and analyzed the process of countercurrent extraction.
介绍了一种茶叶浸提的新方法，并对逆流提取的过程进行了分析。
This article mainly aims at introducing the process, the structure and the characteristics of continuous countercurrent extraction.
介绍了连续逆流提取的工艺过程、主体结构及性能特点，并分析了其在实际应用中存在的一些优缺点。
Under the determined extraction (conditions), a new process of countercurrent liquid membrane extraction technology was adopted to separate (terbutaline) enantiomorph.
基于实验已确定的萃取条件，采用液膜逆流萃取技术分离特布他林对映体。
Both the extraction ratios of countercurrent multi-stage extraction and cross current multi-stage extraction were higher than single-stage extraction.
多级逆流或错流萃取的萃取率明显高于单级萃取。
The utility model is a solvent heating countercurrent extractor which is used for the extraction of the heat sensitivity natural products.
本实用新型是一种溶剂热逆流萃取器，用于萃取热敏性天然产物。
The primary technology processes are many scales of countercurrent extraction, vacuum concentration, a drop purification and vacuum drying in low temperature.
工艺主要流程为茶汤预处理后的多级逆流萃取、真空浓缩、纯化沉析、低温真空干燥。
The study on hydrodynamics and mass transfer performance is carried out in a 25 mm diameter continuous countercurrent supercritical fluid extraction spray column.
建立了描述连续逆流超临界流体喷淋萃取塔的流体力学关联式，根据双膜理论，建立了用于计算液相总体积传质系数的质量传递模型。
The dynamic continuous countercurrent extraction has the advantages of better continuity, higher gypenosides yield and higher purity.
动态连续逆流提取绞股蓝皂苷具有生产连续性好、皂苷提取得率高、产品纯度高等优点。
The solvent countercurrent extraction process for total flavonoids from Toona sinensis (A Juss.
优选香椿叶总黄酮的最佳提取工艺。
Extraction factor is one of the most important parameters in optimum design of countercurrent extraction technology.
萃取比是优化串级萃取工艺设计中的重要参数。
The constitutional feature of a new complete countercurrent mixer-settler unit, its main advantages, and its performances in solvent extraction tests are stated.
本文概述了全逆流混合澄清器的结构特征、主要优点和试验结果。
The constitutional feature of a new complete countercurrent mixer-settler unit, its main advantages, and its performances in solvent extraction tests are stated.
本文概述了全逆流混合澄清器的结构特征、主要优点和试验结果。
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