Unverified82% confidenceDecision RuleTime unknown
背光式（backlit）字母牌视觉效果最柔和，字母边缘发光形成光晕，适合客厅氛围墙；正面发光（frontlit）亮度高但显廉价，慎用于家居环境
1
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82%
Confidence
Long-term
Relevance
-
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