Unverified85% confidenceSolutionTime unknown
选购前先用磁铁+敲击法确认墙体类型:敲击声空洞多为石膏板/空心砖,声音沉实为实心墙;据此再匹配固定方式和承重预期,是搁架选购的第一步
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85%
Confidence
Long-term
Relevance
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