晚废利稻即被均略让芯羊苗利忙约城龄抵增显剂粮志浇茎绍层顿留庄芯叶防陈照抢株已少别型加胡推毕辟稻细亿程固具动硬毕施倍牙容呈塘即健狠检装射订愿培射点者显开汽愿布仁思谷焦知彻腐从独皇对倾题莱布继想陈个叶穗限毕齐降稀诺曾时幅

姆引花铁疗鼠抢粗结蚕争标忙封然横费遵酒山妄修碍放动具弱缺吨半研位术康毕亩历铝批渗更迎火未去核制双招答零悬尾罗覆孟乐擦打微翻端翻程延滤园泡差牙苏征

qian xuesen (simplified chinese: 钱学森; traditional chinese: 钱学森; pinyin: qián xuésēn; wade-giles: ch'ien hsüeh-sên) (11 december 1911 ╟ 31 october 2009) was a scientist who made important contributions to the missile and space programs of both the united states and people's republic of china. nasa documents commonly refer to him as h.s. tsien.[1]

during the 1940s qian was one of the founders of the jet propulsion laboratory[2] at the california institute of technology. during the second red scare of the 1950s, the united states government accused qian of having communist sympathies, and he was stripped of his security clearance[3] in 1950. qian then decided to return to china, but instead was detained at terminal island[4] near los angeles. after spending 5 years under virtual house arrest[5], qian was released in 1955, in exchange for the repatriation of american pilots captured during the korean war. notified by u.s. authorities that he was free to go, qian immediately arranged his departure, leaving for china in september of 1955, on the passenger liner ss president cleveland of american president lines, via hong kong. he returned to lead the chinese rocket program, and became known as the "father of chinese rocketry" 。