corrugated
adjective uk/ˈkɒr.ə.ɡeɪ.tɪd/ us/ˈkɔːr.ə.ɡeɪ.t̬ɪd/
（尤指铁板或纸板）波纹状的，有瓦楞的
(especially of sheets of iron or cardboard) having parallel rows of folds that look like a series of waves when seen from the edge
The roof is made from sheets of corrugated iron. 建造屋顶使用的材料是有波纹的铁板。