Home / Standards / GB/T 6620-2009 GB/T 6620-2009 Active Test method for measuring warp on silicon slices by noncontact scanning 硅片翘曲度非接触式测试方法 Standard Type GBT ICS 29.045 CCS H82 Status 现行 Issue Date 2009-10-30 Implementation 2010-06-01 Responsible Dept 国家标准委 Drafting Unit N/A