On Crevice of Roofing Slate of Concrete Building
浅析混凝土楼屋面板裂缝
All together, roofing slate plane tickets at up to form a dome.
各一道, 屋面石板架在券上, 形成拱顶。
We are Chinese quarry producer and exporter of slate in a variety of colors for use in roofing, flooring, paving, walling, and billiard tabletop slate, craft slate.
我厂位于风景秀丽的庐山脚下。
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