[KongchangAI]
Unverified85% confidenceFactTime unknown

铺贴成本按覆盖面积算而非片数:常见规格77×70cm单片约0.5㎡,30×60cm单片约0.18㎡,计算所需数量时应按实际墙面面积÷单片有效覆盖并预留10%损耗

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