发布时间:2025-01-24 05:26:09
泥浆比重任何情况下不得低于1.06 最佳保持在1.1左右,含砂率不得高于7%,粘度不得高于30s,最佳25左右,这是砂性土,粘性土有点不一样,规范的话去看地下铁道施工规范
我在一楼,二楼马桶一冲下,一楼就听见很大冲水声音,这是为什么
2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09 2025-01-24 05:26:09