Unverified90% confidenceDecision RuleTime unknown
追求完全黑暗(如睡眠/婴儿房/影音室)需选可见光透过率≤1%的全遮光PVC黑膜,且必须配合边框密封条封闭四周缝隙,否则漏光缝可达10cm宽
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