A roofing tile with an S - shaped profile, laid so that the down curve of one tile overlaps the up curve of the next one.

 
  • 波形瓦橫斷面為不對稱(chēng)的S形曲線(xiàn)的一種屋頂瓦,交替放置以使各相鄰瓦片之間的曲線(xiàn)上下銜接
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