Home / Standards / GB/T 29057-2012 GB/T 29057-2012 Abolished Practice for evaluation of polocrystalline silicon rods by float-zone crystal growth and spectroscopy 用区熔拉晶法和光谱分析法评价多晶硅棒的规程 Standard Type GBT ICS 29.045 CCS H80 Status 废止 Issue Date 2012-12-31 Implementation 2013-10-01 Responsible Dept 国家标准委 Drafting Unit N/A