Home / Standards / GB/T 12275-1990 GB/T 12275-1990 Active The rule of type designation for quartz crystal oscillators 石英晶体振荡器型号命名方法 Standard Type GBT ICS 31.140 CCS L21 Status 现行 Issue Date 1990-03-15 Implementation 1990-10-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A