Home / Standards / GB/T 10104-2011 GB/T 10104-2011 Active Marine magnetic compass of class B 船用B级磁罗经 Standard Type GBT ICS 47.020.70 CCS U65 Status 现行 Issue Date 2011-12-30 Implementation 2012-06-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委