2013年1月5日,上海交大、浙江大学、南京航空航天大学、北京理工大学四所高校的校长,以及西北工业大学、哈尔滨工业大学和航天科工集团等众多高校科研院所的知名专家教授们汇聚一堂,只为向一位老先生道一声:“生日快乐!”这些专家中不少人已是古稀之年,发言时却都谦恭地称一声“尊敬的范先生”。那 On January 5, 2013, principals from four universities including Shanghai Jiaotong University, Zhejiang University, Nanjing University of Aeronautics and Astronautics and Beijing Institute of Technology, and well-known experts and professors from many universities and colleges, such as Northwestern Polytechnical University, Harbin Institute of Technology and Aerospace Science and Industry Corporation We all came together and only said to an old gentleman: Happy Birthday! Many of these experts are already in their infancy, but they all humbly call the honorable Fan. that