发布时间:2025-01-21 01:56:25
800*800=0.64个平方 34/0.64=53.125块 加损耗 34平的56块就可以了
某小学装修多媒体教室计划用边长30厘米的釉面方砖铺地需要900块实际用边长50厘米的大理石方
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