Home / Standards / NB/T 20004-2011 NB/T 20004-2011 Abolished 核电厂核岛机械设备材料理化检验方法 Standard Type NB ICS N/A CCS N/A Status Abolished Issue Date 2011-07-01 Implementation 2011-10-01 Centralized Committee 国家能源局 Issuing Authority 国家能源局