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编辑同志: 你刊1959年7月号登载了由王常发、徐道恒署名的“海水综合利用之一——用六硝基二苯胺提取钾的某些研究”的文章,这项工作是山东大学化学系(在迁往济南以前)科研项目之一。当时系和教研组决定由我负责,有徐道恒、叶容溪、王常发和孙锡楑四位同学参加,当时限于时间只进行了极为初步的试探性工作,后又因山东大学迁往济南而告终止。
Editor’s Comrade: In your article, published in July 1959, you published the article entitled “Some Studies on the Extraction of Potassium by Hexanitro Diphenylamine” by Wang Changfa and Xu Daoheng, an article entitled “Comprehensive Utilization of Seawater”, a work by Department of Chemistry, Shandong University (Before moving to Jinan) one of the research projects. At that time, the department and the teaching and research group decided to take charge of it. There were four classmates including Xu Daoheng, Ye Rongxi, Wang Changfa and Sun Xiqian. At that time, they only carried out extremely tentative explorations at the time and then ended their relocation to Jinan.