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2025光亚展如同一面棱镜，折射出照明行业从“功能输出”到“价值创造”的转型。
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光效利用率（η）是照明节能最关键、贡献最大的指标，其本质是“精准控光”能力。
https://www.alighting.cn/news/20251222/178277.htm2025/12/22 10:24:35
