Home / Standards / GB/T 27964-2011 GB/T 27964-2011 Active Grade of fog forecast 雾的预报等级 Standard Type GBT ICS 07.060 CCS A47 Status 现行 Issue Date 2011-12-30 Implementation 2012-03-01 Responsible Dept 中国气象局 Drafting Unit 中国气象局