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航天推进系统
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航天推进系统
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space propulsion system
航天推进系统
完全依靠自身携带的物质或大气层外空间可利用的物质作为工质,利用反作用原理将工质以一定速度释放出去,使自身获得反作用推力,为航天器提供推力或力矩的动力系统。
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site of Chongqing Negotiations
Site of Coastal Defense at Zhenhaikou
site of Communist Party of China Office in Meiyuan Xincun
Site of Confucian Temple at Taipinghu of Huangshan
Site of Crime Evidence of Japanese Unit 731
Site of Cucuteni
Site of Dingyuan Battleship at Weihai
Site of Dongbei University
Site of Donggu Bank
Site of Dongguwan Shipwreck at Dongshan
site of Eastern Zhou Capital
Site of Fashi Ancient Ship at Quanzhou
Site of Four Crossings of Chishui River Campaign
Site of Fu Jen Catholic University
Site of Generalissimo Mansion at Guang Zhou
Site of Geology Museum of Peking University
Site of Ginling College
Site of Guangdong Customs
Site of Han and Wei Dynasties in Sanjiang Pingyuan
Site of Hanshan Villa
Site of Han wooden Ship at Wujin
Site of Hatra
site of Henan General Academy Catholic
site of Heshun Library
Site of Hexian Homo Erectus
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