发布时间:2025-01-21 00:52:51
800*800=0.64个平方 34/0.64=53.125块 加损耗 34平的56块就可以了
角焊缝的端部绕焊和止焊是什么意思美国焊接协会钢结构焊接规范中规定角焊缝必须规定端部绕焊或止焊
2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52 2025-01-21 00:52:52最近看了一套房子11层的小高层想买顶楼又怕漏水楼顶上面是加了一个坡顶的那种坡顶是浇筑板上
2025-01-21 00:52:52 2025-01-21 00:52:52