Home / Standards / GB/T 4774-2013 GB/T 4774-2013 Active Terminology of filtration and separation 过滤与分离 名词术语 Standard Type GBT ICS 73.120 CCS J77 Status 现行 Issue Date 2013-12-17 Implementation 2014-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A