Home / Standards / GB/T 6429-1986 GB/T 6429-1986 Active The rule of type designation for quartz crystalunits 石英谐振器型号命名方法 Standard Type GBT ICS 31.140 CCS L21 Status 现行 Issue Date 1986-05-27 Implementation 1987-05-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A