www.bzfxw.comICS07.060CCSA47DB11北京市地方标准DB11/T2307—2024气象观测铁塔维护要求Requirementsformaintenanceofmeteorologicalobservationtower2024-09-23发布2025-01-01实施北京市市场监督管理局发布www.bzfxw.comDB11/T2307—2024I目次前言..................................................................................II1范围.................................................................................
