今年是本刊创刊 70周年。编辑部委托“文革”后复刊以来一直在编辑部工作的前副主编王治浩同志组织了一批纪念文章 ,现特选发其中的 4篇 ,以贺。编辑部愿借此机会 ,向所有一贯关心、支持本刊工作并为本刊的发展做出卓越贡献的老科学家、老教师、老编委、编辑同仁以及广大热心读者、作者表示最崇高的敬意和最衷心的感谢。我们一定一如既往 ,努力工作 ,迎接新的挑战 ,创造更加灿烂的明天。 This year is the 70th anniversary of our publication. Wang Zhihao, a former deputy chief editor who has been working in the editorial department since the editorial office commissioned the “Cultural Revolution”, organized a series of commemorative essays. The editorial department would like to take this opportunity to extend its warmest tribute to all the old scientists, veteran teachers, editorial board members, editorial colleagues and enthusiastic readers who have always been concerned about and support our work and contributed to the development of this magazine. And most heartfelt thanks. We will, as always, work hard to meet the new challenges and create a brighter future.