Home / Standards / GB/T 5252-2020 GB/T 5252-2020 Active Test method for dislocation density of monocrystal germanium 锗单晶位错密度的测试方法 Standard Type GBT ICS 77.040 CCS H21 Status 现行 Issue Date 2020-06-02 Implementation 2021-05-01 Responsible Dept 国家标准委 Drafting Unit N/A