[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

砖缝为普通白水泥勾缝的墙面,油污会渗入形成黑黄斑且无法洗净,清洗后应加做美缝(环氧彩砂)覆盖,单纯清洗砖缝会反复变黑

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82%
Confidence
Long-term
Relevance
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