在人們越來越注重自身素養的今天，愈來愈多的'推薦情況都可以使用推薦信了，推薦信有不同的類別，不同類別的推薦信用于不同的情況和環境。怎么寫推薦信才能避免踩雷呢？下面是小編為大家整理的美國留學推薦信范文:航空航天專業，僅供參考，希望能夠幫助到大家。
Dear Sir or Madam：
Mr. Newman Song was one of the undergraduate students whom I taught and my research assistant in my research programs. My close contact with Mr. Song and my relatively deep understanding of his character and his academic performance qualify me as the most appropriate person to recommend this promising young man who is currently applying for a degree program at your university.
As adviser of Mr. Song's graduation design， I collaborated with him for more than one year. In this process， Mr. Song left a very deep impression on me. He possessed a profound understanding of the nature of mechanical engineering. Moreover， he is rigorous in his scientific mentality and perseverant in his research stamina. He distinguished himself from his fellow students by his exceptional capability in making important findings. All those precious qualities are incorporated in his graduation design.
For his graduation design， Mr. Song concentrated on The Surface Alloy Treatment of the Cylinder Piston Ring of Desert Vehicles by Laser， which was a major challenge for an undergraduate. The project involved a considerable amount of knowledge outside his area of specialization. In order to ensure the successful execution of the project， Mr. Song consulted a large amount of technical literature in those related fields and acquired all the necessary background knowledge for undertaking his research. The project called for substantial fieldwork and experimentation and Mr. Song tried his best to be meticulous in every detail. He was independently responsible for the laser treatment of the product， a crucial step in the entire project， and the subsequent sampling and testing. His personal efforts contributed importantly to the final consummation of the program.
Equally impressive is Mr. Song's innovative spirit. During the research， he came up with quite a few valuable and constructive suggestions. I incorporated almost all of his suggestions into the actual research. The effectiveness of those important advices has been fully demonstrated in practice. Another important factor that contributed to his research success is his readiness to cooperate with others. He is adept at interpersonal communications coordination. Consequently， all the problems that occurred in the process were smoothly and speedily worked out.
On the basis of his heretofore prominent performance， I fully believe that Mr. Song is replete with potentials which will enable him to adapt to his future academic environment at your university. With all the excellent research facilities and invaluable instructions by the renowned professors that your university provide，
Yours Faithfully
Professor of Mechanical Engineering
Supervisor of Ph. D Program
Tsinghua University
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