DB/T 29-326-2024备案号：J17866-2024天津市地下管线精细探测技术规程Technical specification for accurate detectionof underground pipelines in Tianjin2024-11-12 发布2025-01-01 实施天津市工程建设标准天津市地下管线精细探测技术规程Technical specification for accurate detection ofunderground pipelines in TianjinDB/T 29-326-2024J17866-2024主编单位：天津市测绘院有...