Home / Standards / GB/T 8756-2018 GB/T 8756-2018 Active Collection of metallographs on defects of germanium crystal 锗晶体缺陷图谱 Standard Type GBT ICS 29.045 CCS H80 Status 现行 Issue Date 2018-12-28 Implementation 2019-07-01 Responsible Dept 国家标准委 Drafting Unit N/A