发布时间:2025-01-16 12:50:47
钢材密度按7850千克/立方米计算,
方通重量为:
(0.2X0.2-0.18X0.18)X1X7850
=59.66千克/米
=59.66公斤/米
海信电视LED42K560x3D电视重装系统黑屏了怎么办,求救!
2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47 2025-01-16 12:50:47我家装修完毕准备搬家六楼漏水使顶部损坏六楼说是房子质量问题找到物业物业又找到施工方施工方答
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