DIN EN ISO 21813 E:2022 精细陶瓷(高级陶瓷、先进技术陶瓷) 高纯度钛酸钡粉末化学分析方法(ISO 21813:2019) 草案
Draft Document - Fine ceramics (advanced ceramics, advanced technical ceramics) - Methods for chemical analysis of high purity barium titanate powders (ISO 21813:2019); German and English version prEN ISO 21813:2022