发布时间:2025-01-16 12:29:30
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
类似于上海中心大厦的五六百米高楼楼层间距都是三米左右怎么会用的上五六百米高最多也就四百多米
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