[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

导光效率与开孔改造量存在矛盾:大管径导光效果好但需在屋顶及楼板开更大孔洞,破坏防水层和结构;小管径改造小但暗间照度不足,暗卫等小空间用250mm即可平衡

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