美利体育登录入口官网:DIN EN ISO 14644-9:2022-01
草案 洁净室和相关受控环境 第9部分:颗粒浓度表面洁净度评估 (ISO/FDIS 14664-9:2021)
Draft Document - Cleanrooms and associated controlled environments - Part 9: Assessment of surface cleanliness for particle concentration (ISO/FDIS 14664-9:2021); German and English version prEN ISO 14664-9:2021