表面光洁平整。
要产生一个样本证明：躺着的基板，光洁平整的表面上。
To produce a sample proof: Lay the substrate out on a smooth flat surface.
叶子呈灰色，平整光洁。
施工验收：表面平整光洁、色彩一致、无明显色差。
Construction acceptance: surface shall be level and smooth, of unified hue, no clear color deviation.
施工验收：表面平整光洁、色彩一致、无明显色差。
Construction acceptance: surface shall be level and smooth, of unified hue, no clear color deviation.
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