jipgwanggi
concentrating lens
lentille de concentration ; lentille convergente ; lentille de focalisation
집광기를 사용하여 태양광을 집중시킬 수 있습니다.
jipgwanggireul sayonghayeo taeyanggwang-eul jipjungsikil su itsseumnida.
You can use a concentrating lens to focus sunlight.
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