Unverified85% confidenceDecision RuleTime unknown
选购时应确认防尘罩尺寸比设备实际长宽高各留出2-3cm余量，过紧套罩会摩擦刮花机身且难以套取，硬质设备（音箱/显示器）尤其需要贴合角部立体裁剪的款式
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Unverified选购防尘罩需预留2-3cm松量，罩体内径应比设备最大尺寸大2-3cm，过紧会摩擦屏幕镀膜或刮花机身，过松则易滑落聚尘不均92% similarUnverified选尺寸时需实测电器长宽高并额外预留2-3cm裕量，罩子标称尺寸多为最大适配值，过紧会包不住底座/挂架，过松则易滑落漏灰83% similarUnverified内部有效容积通常比标称外部尺寸小20-30%（壳体壁厚+泡棉占用），选购时按设备实际尺寸预留至少15%空间避免泡棉压不实导致晃动78% similarUnverified尺寸选购按箱内净尺寸减2-3mm预留，标称尺寸多为外径，购买卷材可自裁的产品比定制切割件容错率更高，尤其异形防潮箱内腔78% similarUnverified小屏机套壳后宽度和厚度会增加2-4mm，可能直接抵消小屏优势，追求裸机手感者应优先考虑机身抗刮涂层和金属中框的裸奔耐用性78% similar
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