hw1

Published 2010 年 1 月 27 日 at 放大圖片 1536 × 2048 in 匡湖居

雲石底層沒有做好防水，石面塗上防水油後更有反效果，濕氣會令到石面防水油發霉，發霉後令到石面失去光澤

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