发布时间:2025-01-31 23:47:55
隧道宽25米,那么其弧顶长为3.14*25/2=39.25米,则所需平方数是39.25*1=39.25平米。
用隧道防水板就找山东莱芜金达土工材料有限公司
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2025-01-31 23:47:55 2025-01-31 23:47:55 2025-01-31 23:47:55 2025-01-31 23:47:55 2025-01-31 23:47:55 2025-01-31 23:47:55 2025-01-31 23:47:55石家庄新华路幸福城b区现在是不是已经开始建了 想在这买房子 靠谱吗
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