흑.. 미술쪽두 전문용어가 꽤 어렵군유... 자상한 설명 부탁드려요.. @플애.~ flyash, nuclear containment, marine, mass, high strength, high performence, Construction Researcher ^.^ minow@kids sampoong,paldang,sungsu,dangsan,chunggye,wawoo apt,anyang,subway,tunnel....