gwanggwanui
coronagraph
coronographe
광관의 장치는 태양의 코로나를 관찰하는 데 사용됩니다.
gwanggwan-ui jangchi-neun taeyang-ui corona-reul gwansalhaneun de sayongdoemnida.
The coronagraph device is used to observe the sun's corona.
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