Home / Standards / GB/T 31109-2014 GB/T 31109-2014 Active Method of evaluation for acoustic quality of musical instrument 乐器声学品质评价方法 Standard Type GBT ICS 97.200.20 CCS Y58 Status 现行 Issue Date 2014-09-03 Implementation 2015-08-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A