决策者寄语(英文)

<正>"PTC is a great campany with a great future and T look forward to its continued success.Our growth appartunities are very strang and we continue to capture market share as the     

艾俊强 气动布局专家

气动布局是飞机设计过程中非常重要的一环,作为中航工业气动布局专家,请您谈谈飞机气动布局设计的重要性以及国内外的发展现状。艾俊强:气动布局是飞机方案设计的核心技术,气动布局方案的好坏直接影响到型号的成败。飞机气     

A Good Beginning of Chang'e Project(Part 2)

<正>TTC System This system is primarily based on China's exi sting threeband space TTC netwo rk,and supplemented by the very long ba seline interferometry(VLBI) astronomical measurement system. The TTC and communications system belonging to the Phase I of China Lunar Exploration Program (CLEP)is based on the existing USB space monitoring and control network. After a technological transformation,     

朱知寿 钛合金材料专家

<正>作为航空材料宗师颜鸣皋院士和曹春晓院士的弟子,您可谓是航空钛合金材料技术领域的集大成者,请您谈谈目前航空用钛合金的国内外研究及应用情况。朱知寿:飞机结构用钛合金已从追求单一高性能(如高强度,包括