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化学讲座是由大同大学教授关实之先生和曹友芳先生担任的,从本期起将连续登载,以他们宝贵的教学经验贡献给各位做化学自修的参考
Chemistry lecture by Datong University, Professor Guan Shi and Mr. Cao Youfang served as, from this issue will be published continuously, with their valuable teaching experience to contribute to the chemical self-reference