Home / Standards / GB/T 20175-2025 GB/T 20175-2025 Active Surface chemical analysis—Sputter depth profiling—Optimization using layered systems as reference materials 表面化学分析 溅射深度剖析 用层状膜系为参考物质的优化方法 Standard Type GBT ICS 71.040.40 CCS G 04 Status 现行 Issue Date 2025-06-30 Implementation 2026-01-01 Responsible Dept 中国科学院 Drafting Unit N/A