retention aid and drainage aid
retention aid and drainage aid
助留剂和引流剂
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The paper has discussed the method of synthesis of cationic-type polyacrylamide and it's application as flocculant, retention aid, drainage aid and strength aid.
本文介绍了阳离子型聚丙烯酰胺的制备方法及其在造纸工业中作为助留助滤剂、增强剂、絮凝剂的作用机理和应用条件。
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