The Naro-1 is the first south korean orbital launch ...
In a radio system, a selected processing frequency between ...
A series of Russian spacecraft, in operation from the 1960s ...
A type of vertical transport device that efficiently moves ...
The world's first paper plane space mission launched by the ...
北京,中华人民共和国首都、直辖市和国家中心城市,中国的政治、文化、科教和国际交往中心,中国经济、金融的决策和管理中心,中 ...
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