发布时间:2025-01-16 13:22:16
先把中间的盖撬开,再把右边的挡板推开,就可以了
三层楼房一楼有个钢筋混凝土结构的大梁跨度67米尺寸200400mm下面三根25上面两根18的螺纹钢筋
2025-01-16 13:22:16 2025-01-16 13:22:16 2025-01-16 13:22:16 2025-01-16 13:22:16 2025-01-16 13:22:16 2025-01-16 13:22:16 2025-01-16 13:22:16 2025-01-16 13:22:16