chemical purification 化学净化法 ; 化学净化 ; 化学反应 ; 化学纯化 aerobic purification 好气性净化 ; 好氧净化 .
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... 物理净化;physical purification 化学净化;chemical purification 生物净化;biological purification ...
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chemical purification 化学净化法 ; 化学净化 ; 化学反应 ; 化学纯化 aerobic purification 好气性净化 ; 好氧净化 .
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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
Answer: want first choice, remaking sand, through the magnetic separation, flotation or chemical purification, silica be 95 percent.
答：先要精选，再制砂后，经磁选、浮选或化学提纯后，二氧化硅能达到95%。
Combining chemical purification and adsorption purification, this paper studies their effect on further purification of calcium and magnesium ions.
本文将化学净化与吸附净化相结合，考察其对卤水中钙镁离子的深度净化效果。
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。
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