Unverified78% confidenceSolutionTime unknown
石膏泛黄或吸满灰尘失效后无法水洗(遇水崩解),可用细砂纸打磨表层0.5mm恢复吸附力,这也是选购时优先无封层素面石膏的理由——可反复翻新
1
Sources
78%
Confidence
Long-term
Relevance
-
First Seen
Sources
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