Home / Standards / DL/T 1139-2009 DL/T 1139-2009 Active 燃煤电站齿索式输粉机 Standard Type DL ICS N/A CCS N/A Status Active Issue Date 2009-07-01 Implementation 2009-12-01 Centralized Committee 国家能源局 Issuing Authority 国家能源局