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Unverified80% confidenceDecision RuleTime unknown

亚克力底板厚度建议选5mm以上，3mm底板尺寸超过50cm后易变形弯曲，长期悬挂会出现波浪形翘曲

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Unverified亚克力底板厚度＜3mm的灯牌尺寸超过40cm时易变形翘曲，大尺寸（＞60cm）应选5mm以上底板或分段拼接结构81% similar Unverified厚度选择：便携垫厚度≤2mm可卷曲收纳但缓冲差且易翘边，3mm为便携与稳定的平衡点，超过4mm则卷曲后回弹严重难以平铺81% similar Unverified无边框薄板层板（如3mm钢板）横向跨度超过40cm时中间易下弯变形，长跨度置物需选带加强筋或折边≥15mm的层板80% similar Unverified承重层板厚度需≥18mm且跨度＞90cm时必须加中立板或背板加固，否则3-5年内层板会因蠕变（长期受力下垂）产生可见弯曲，放书籍建议厚度25mm80% similar Unverified承重层板厚度需≥18mm，跨度超过900mm时应加背板固定或中间加立板，否则长期承重会下弯变形，放书籍等重物层板跨度建议≤600mm80% similar

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