Home / Standards / GB/T 32189-2015 GB/T 32189-2015 Active Test method for surface roughness of GaN single crystal substrate by atomic force microscope 氮化镓单晶衬底表面粗糙度的原子力显微镜检验法 Standard Type GBT ICS 77.040 CCS H21 Status 现行 Issue Date 2015-12-10 Implementation 2016-11-01 Responsible Dept 国家标准委 Drafting Unit N/A