chemical purification 化学净化法 ; 化学净化 ; 化学反应 ; 化学提纯
physico-chemical purification 物理化学净化
chemical purification plant 化学净化厂
improvement of chemical purification technology 化学净化技术的改进
chemical purification method 化学净化法
chemical purification process 化学净化法
solvent extraction chemical purification 溶剂萃取
chemical separation and purification 化学分离和提纯
As a chemical it's also used in insecticides, water purification, sewage treatment and the production of ammonia.
作为一种化学原料，它也被用于制造杀虫剂、提纯水、净化污水和制氨。
Some products can have "traces" of thiomersal when the chemical is used during the production process as an antibacterial agent, which is later removed during the purification process.
如果在生产过程中使用硫柳汞作为抗菌剂，然后在净化过程中清除该化学品，有些制品就可有微量硫柳汞。
It is an important separation and purification technique, which is widely used in the areas of chemical industry, pharmaceutical and food industry.
溶析结晶是一种重要的分离和提纯技术，广泛应用于化工、医药、食品等领域。
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