ICS73.040CCSD2052贵州省地方标准DB52/T777—2024大块煤样的制备方法Methodforpreparationoflargecoalsamples2024-05-15发布2024-09-01实施贵州省市场监督管理局发布DB52/T777—2024I目次前言.................................................................................II1范围...............................................................................12规范性引用...
