Home / Standards / GB/T 1554-2009 GB/T 1554-2009 Active Testing method for crystallographic perfection of silicon by preferential etch techniques 硅晶体完整性化学择优腐蚀检验方法 Standard Type GBT ICS 29.045 CCS H80 Status 现行 Issue Date 2009-10-30 Implementation 2010-06-01 Responsible Dept 国家标准委 Drafting Unit N/A