美国运载火箭
美国运载火箭-
美国运载火箭多星发射和搭载发射技术
Multi-satellite Launching and Secondary Satellite Launching Technologies of the US Expendable Launch Vehicles
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尤其是本周早些时候一架搭载货物的美国运载火箭坠毁。
Especially after an American rocket carrying supplies crashed on liftoff earlier this week .
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美国改进型一次性运载火箭发展概况
Development survey of evolved expendable launch vehicle of USA
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介绍美国新一代运载火箭系列的研制计划。
This paper introduces the plan of development of a new generation of launcher family for USA.