hokseong gwedo geunjeop tonggwa
swingby
passage en proximité ; survol ; approche
우주선이 행성 궤도 근접 통과를 통해 속도를 높였다.
ujuseon-i haengseong gwido geunjeop tonggwareul tonghae sokdoreul nopyeotda.
The spacecraft increased its speed through a swingby of the planet's orbit.
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