发布时间:2025-01-30 15:57:52
这个根据荷载而定,荷载小用小螺栓,荷载大用大螺栓,根据梁的大小而定。具体根据设计师设计来做!或者多上两个螺栓。
合肥房价南高北低,南边炒作严重,北边成交活跃,五年后,合肥房价上涨吗
2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52请问家庭光伏发电并网的单相电表和三相电表的具体接线方法和原理电
2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52 2025-01-30 15:57:52