海かい綿めん鉄てつかいめんてつじ字FuriganaMeanings1nounsponge iron; direct reduced iron; DRITechnical term in metallurgy for porous iron produced by direct reduction of iron ore without melting.海かい綿めん鉄てつは、直ちょく接せつ還かん元げん法ほうで製せい造ぞうされる多た孔こう質
