以下为句子列表：
英文: Test study on two biocides, namely quaternary ammonium salt and isothiazolinelcetone, commonly used in circulatory cooling water system has been carried out, obtaining the relationship among dosage, actuation time duration, and the killed persontage, and
中文: 摘要对火电厂循环冷却水系统常用的两种杀菌剂－季胺盐及异噻唑啉酮进行了试验研究，得出加药量、作用时间与杀菌率的关系，并提出杀菌剂的选择原则和注意事项。
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英文: The preparation methods of quaternary ammonium salt of chitosan at home and abroad, meanwhile were introduced, and heir advantages and shortcomings were compared.
中文: 摘要对目前国内外壳聚糖季铵盐的制备方法加以介绍，并比较了它们的优缺点。
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英文: This paper mostly describes the study of the preparation of organosilicon quaternary ammonium salt and the study of the antimicrobial effect.
中文: 摘要研究有机硅高分子氨乙基氨丙基硅油的季铵化及其抗菌性能。
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