Home / Standards / GB/T 33763-2017 GB/T 33763-2017 Active Test method for dislocation density of sapphire single crystal 蓝宝石单晶位错密度测量方法 Standard Type GBT ICS 77.040 CCS H25 Status 现行 Issue Date 2017-05-31 Implementation 2017-12-01 Responsible Dept 国家标准委 Drafting Unit N/A