Usually galvanized sheet iron or sheet steel shaped into straight parallel ridges and hollows .
通常是指外形上带有平行的突起和凹陷的白铁钢板。
Application of styrene-acrylate anti-rusting emulsion paint on galvanized sheet iron
苯乙烯&丙烯酸酯防锈乳胶漆在镀锌铁板上的试验和应用