发布时间:2025-01-20 01:13:37
阳台挑梁是悬挑构件,主要受力钢筋是上部钢筋。打断底部钢筋对梁的受力有一定影响,梁端加了一个柱子作用不大。
我喜欢的女生在一个商场内开了一家饮品店现在这家商场的人气不好求各位帮忙想一些经营方面的点子
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