Home / Standards / GB/T 1557-2018 GB/T 1557-2018 Active Test method for determining interstitial oxygen content in silicon by infrared absorption 硅晶体中间隙氧含量的红外吸收测量方法 Standard Type GBT ICS 77.040 CCS H17 Status 现行 Issue Date 2018-09-17 Implementation 2019-06-01 Responsible Dept 国家标准委 Drafting Unit N/A