1、
介绍了反渗透技术在彩管行业纯水制造中的应用.
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2、
Water should be regularly chlorinated in public swimming baths to keep it pure.
公共游泳池的水应定期使用氯气消毒,以保持干净.
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3、
4、
Pure spring water color, texture in turn , enables people to drink perennial longevity.
冷水泉水色纯净, 质地醇美, 常年饮用能使人延年益寿.
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5、
The examination pollutes the PH value of water and pure water, and contrast with pure water.
检测污染水和纯净水的PH值, 并与纯净水对比.
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6、
Does a spring gush forth from the same opening both pure and brackish water?
泉源岂能从同一孔穴,涌出甜水和苦水来?
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