Unverified85% confidenceDecision RuleTime unknown
尺码需按脸型三围匹配：3-6岁选耳挂间距约12cm、口罩长约13cm的S码；7-12岁选14-15cm的M码，尺码过大导致侧漏使过滤失效，过小压迫鼻梁影响呼吸
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Unverified需上拉遮口鼻的多功能头巾（buff类）展开长度应≥45cm，才能同时覆盖颈部与面部；单纯护颈选25-35cm筒状即可82% similarUnverified3岁以下幼儿佩戴类面具需满足绑带宽度≥15mm且为弹性布料，硬质塑料弹力绳会勒伤耳朵，且面具不应完全遮挡口鼻（需有透气开口）80% similarUnverified家用耳鼻喉检查仪镜头直径应≤3.9mm才能安全进入儿童外耳道，3.5mm及以下更适合3岁以下婴幼儿，超过4.5mm仅适合成人观察鼻腔口腔78% similarUnverified盾片直径应≥宝宝口鼻间距，一般选择盾片宽度≥3.5cm且带镂空透气孔的设计，防止盾片贴合面部造成压痕和口水疹78% similarUnverified口罩支架高度≥1.5cm（3D立体支撑）才能有效在口罩与口鼻间形成呼吸空间，低于1cm的平板型支架几乎无立体支撑作用，长时间佩戴仍会贴脸闷热78% similar
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