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Chinese Academy of Sciences successfully launched a new sounding rocket, Kunpeng-1B, in Hainan Danzhou early Wednesday. The rocket reached a flight height of 300 kilometers for the first time. Its arrow configuration of altitude control system and ca
发表于:2019-03-12 / 阅读(233) / 评论(0)
cctv9英语新闻2016年
cctv9英语新闻2016年