Unverified80% confidenceDecision RuleTime unknown
购买防尘罩需按设备外轮廓尺寸预留2-3cm余量，尺寸过紧会摩擦屏幕/机身涂层，过松则易滑落露出缝隙进灰，测量时以最长/最宽/最高三维尺寸为准
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Unverified防尘罩尺寸需比设备实际外径预留2-4cm余量，过紧会磨损涂层/贴合不到位，过松（余量＞8cm）则易积灰进入并影响美观；显示器罩要按对角线尺寸+底座宽度综合选择90% similarUnverified遮盖布尺寸应比被覆盖物每边预留15-20cm下垂量，才能有效阻挡侧面灰尘，仅按物体正投影尺寸购买会导致底部积灰85% similarUnverified选购电脑/主机防尘罩时应预留5-10cm的边缘余量，测量设备最长边后加余量再选尺寸，紧绷的防尘罩易积静电吸尘且难套取82% similarUnverified选购前需实测台面宽度，成品定宽卷膜常见60cm/70cm/80cm，台面超过卷宽需拼接会产生接缝进油污，宽台面应选按整幅定制或大宽幅款79% similarUnverified购买前需量取设备实际外径尺寸（含底座和突出旋钮），预留2-3cm余量，通用款防尘罩标注尺寸常偏松，套洗衣机等震动设备易滑落78% similar
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