cheoncheyeokhak
astrodynamics
astrodynamique
천체역학은 우주선의 궤도를 계산하는 데 사용됩니다.
Cheontae yeokhak-eun ujuseon-ui gwido-reul gyohwanhaneun de sayongdoemnida.
Astrodynamics is used to calculate the orbits of spacecraft.
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