ICS53.020.20CCSJ8041河南省地方标准DB41/T2649—2024行星机构桥式起重机设计指南2024-03-12发布2024-06-11实施河南省市场监督管理局发布DB41/T2649—2024I目次前言.................................................................................II1范围...............................................................................12规范性引用文件.........................
