Home / Standards / GB/T 17722-1999 GB/T 17722-1999 Active Gold-plated thickness measurement by SEM 金覆盖层厚度的扫描电镜测量方法 Standard Type GBT ICS 37.020 CCS N33 Status 现行 Issue Date 1999-04-11 Implementation 1999-12-01 Responsible Dept 国家标准委 Drafting Unit N/A