Home / Standards / GB/T 12633-1990 GB/T 12633-1990 Active Terms for the measurements of the properties of the piezoelectric crystals 压电晶体性能测试术语 Standard Type GBT ICS 31.140 CCS L32 Status 现行 Issue Date 1990-12-28 Implementation 1991-10-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A