Home / Standards / GB/T 31093-2014 GB/T 31093-2014 Active Test method for stress of monocrystalline sapphire ingot 蓝宝石晶锭应力测试方法 Standard Type GBT ICS 77.040.10 CCS H22 Status 现行 Issue Date 2014-12-22 Implementation 2015-09-01 Responsible Dept 国家标准委 Drafting Unit N/A