Home / Standards / GB/T 27788-2020 GB/T 27788-2020 Active Microbeam analysis—Scanning electron microscopy—Guidelines for calibrating image magnification 微束分析 扫描电镜 图像放大倍率校准导则 Standard Type GBT ICS 37.020 CCS N32 Status 现行 Issue Date 2020-06-02 Implementation 2021-05-01 Responsible Dept 国家标准委 Drafting Unit N/A