Home / Standards / GB/T 6627-1986 GB/T 6627-1986 Active Designations for lumbered synthetic quartz crystals 人造石英晶体棒材型号命名方法 Standard Type GBT ICS N/A CCS L21 Status 现行 Issue Date 1986-07-29 Implementation 1987-06-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A