Home / Standards / GB/T 34481-2017 GB/T 34481-2017 Active Test method for measuring etch pit density (EPD) in low dislocation density monocrystalline germanium slices 低位错密度锗单晶片腐蚀坑密度(EPD)的测量方法 Standard Type GBT ICS 77.040 CCS H25 Status 现行 Issue Date 2017-10-14 Implementation 2018-07-01 Responsible Dept 国家标准委 Drafting Unit N/A