수소 생산 전환로의 노관 문제
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수소 생산 전환로의 노관 중 몇 개만 검게 변했고, 나머지는 모두 하얗습니다. 문제가 있나요?누군가 설명해주면 좋겠어요. 감사합니다!
좀 더 명확하게 설명해주실 수 있나요?사진을 찍어서 올리는 게 가장 좋아요
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