空气动力学研究会成立大会的同志们: 我因事不能来参加今天开始的空气动力学研究会成立大会,但我的心是想往你们这个集会的。所以写这封信,寄托一点心意。在四十多年前到三十多年前的一段时间里,我做过一点空气动力的理论工作,但后来条件变了,时过境迁,我差不多完全脱离了这个研究领域。我始终认为这是一个非常重要的,因而是富有生命力 Comrades of the Society for Aerodynamics: I can not attend the meeting of the Aerodynamics Society which will be started today because of events. But my heart is going to your assembly. So write this letter, put a little mind. For some time over thirty years ago, more than thirty years ago, I did a bit of theoretical work in aerodynamics, but things changed later. After a while, I was almost completely out of this research field. I always think this is a very important and therefore full of vitality