Purification Technics Centre 净化技术中心
compound purification technics 复合净化技术
The extraction technics, purification technics, physic-chemical property and the application of mulberry red pigment in recent years were summarized in this paper.
综述了近年来桑椹红色素的提取、纯化工艺及其理化性质和应用现状。
In this paper, the category and harm of indoor air contaminants are described, the theories and advantages and disadvantages of several purification technics are introduced.
概述了室内污染物的种类及危害，介绍了目前几种室内空气净化技术原理及优缺点。
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