苏州齐惠壮士
你好，钱学森。uring the 1940s Qian was one of the founders of the Jet Propulsion Laboratory 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 in 1950. Qian then decided to return to China, but instead was detained at Terminal Island near Los Angeles. After spending 5 years under virtual house arrest, 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 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" (or "King of Rocketry").
lisabaobao99
Edison is a great scientist,He was born in 1847.He is a world-famous scientist and inventor power of the United States, as the "King of the invention of the world." In addition to his phonograph, electric, cable, film, and other aspects of the invention and contribution to, in the mining, construction, chemical industry and other fields also have a lot of ideas and the creation of a well-known. Edison lifetime total of about 2000 invention of human civilization and progress made tremendous contributions. Edison is also a great entrepreneur, in 1879, founded the Edison, "Edison Electric Light Company," in 1880, incandescent sale, in 1890, Edison has set up its business to become Edison General Electric Company. In 1891, Edison's fine filament, high-vacuum incandescent bulbs to obtain a patent. In 1892, Houston • Tom Edison power company and the merger of lighting set up General Electric, General Electric started in the electrical field of up to a century of dominance. It was compiled some statistics: Edison's invention of life, in the Patent Office has officially registered about 1,300. In 1881 he invented a record year. This year, he had invented an application on file for the 141, with an average every three days there is a new invention. Edison the great inventor's life tell us: a huge success out of difficult labor.
阿圆凸凸凸
Students, please select one scientist and speaking in English briefly introduce his or her main achievements.
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