QI Hongbin. Application of 13X Zeolite Molecular Sieve to Softening of Hard Water and Assistants of Washing Powder: An Experimental Study[D]. Beijing:China University of Geosciences,2003(in Chinese).
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戚洪彬.;13X沸石分子筛用于硬水软化及洗衣粉助剂的实验研究[D]
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