发布时间:2025-01-29 10:13:31
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
在温暖潮湿的石灰岩山区从事大型的工程建设可能遇到的不良的工程地质现象有哪些
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