Unverified85% confidenceDecision RuleTime unknown
镜面玻璃厚度4-5mm为家用标准，低于3mm易变形产生哈哈镜效果，大尺寸全身镜建议≥5mm防止成像扭曲
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Unverified镜面玻璃厚度选5mm优于3mm，3mm镜面易变形产生'哈哈镜'畸变影响成像，大尺寸镜（>1m）必须用5mm以上90% similarUnverified选装饰镜前先确认镜面"清晰度等级"：优质浮法玻璃厚度4-5mm无波纹，2-3mm薄镜或劣质镜易出现波浪状变形，侧看边缘可辨别86% similarUnverified镜面材质看厚度：优质银镜厚度5mm成像更平整无变形，3mm薄镜易出现波浪形畸变，从侧面看反射线条弯曲即为劣质镜82% similarUnverified近视人群防晒优先选套镜式(over-glasses)墨镜而非夹片，套镜内框深度需≥35mm、宽度≥140mm才能兼容大多数近视镜框，且镜腿处需有防夹缝隙设计80% similarUnverified选择尺寸5x8cm（2x3英寸）左右的信号镜，可在有效性与便携性间平衡；小于5cm的镜面反射光斑衰减快，远距离难被察觉79% similar
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