本图谱虽然取自天然石材产品，但因制版、印刷的客观原因，图谱中石材的颜色与天然石材极难保持完全一致，敬请读者留意。
Although illustrative plates are from natural stone,because of the printing's reason,the color of picture is hardly keep the same with natural stone,please reader keep in mind.
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