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航天学 hángtiān xué
gen. astrogation
environ. astronautics The science of space flight (研究太空飞行的科学。)
space cosmonautics; astronautics
航天学: 270 phrases in 19 subjects
Agriculture1
Air defense1
Aviation41
Business1
Earth sciences9
Electronics19
French1
General6
Genetics1
German2
Italian1
Latin1
Oil / petroleum4
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Space159
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United States16

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