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林同骥先生是我国著名流体力学家．在稀薄气体力学、高超声速、跨声速空气动力学和不可压缩流体动力学等广泛的领域中都有重要的研究成果，尤其是在再入飞行器防热、再人物体的表面烧蚀和不可压缩振荡流等方面，为我国航天事业和海洋工程的发展作出了贡献．林同骥先生在１９７９～１９９０年期间先后任《力学学报》副主编、主编．为《力学学报》在改革开放新形势下的发展和进人国际交流大网络倾注了大量心血．在纪念林同骥先生诞辰８０周年之际，我们向读者介绍这位毕生献中华的科学家，并刊出他的学生们的一些论文，以表达怀念与崇敬之情．
Mr. Lin Tongji is a famous fluid mechanic in our country. There are important research results in a wide range of fields, such as thin gas mechanics, hypersonic, transonic aerodynamics and incompressible fluid dynamics, especially in reentry vehicles, surface ablation and incompressibility Oscillation flow and so on, for China’s aerospace industry and marine engineering has contributed to the development. Mr. Lin Tongji served as deputy editor and editor of Journal of Mechanics from 1979 to 1990. For the “mechanics” in the new situation of reform and opening up and into the international exchange network devoted a lot of effort. In commemorating the 80th anniversary of Mr. Lin Tongji’s birth, we introduce the reader to this Chinese scientist who has spent his entire life and publish some of his students’ essays to express their feelings of nostalgia and respect.