Home / Standards / GB/T 40568-2021 GB/T 40568-2021 Active Nanotechnologies—Characterization of multiwall carbon nanotubes—Mesoscopic shape factors 纳米技术 多壁碳纳米管的表征 介观形状因子 Standard Type GBT ICS 71.040.50 CCS G30 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 中国科学院 Drafting Unit N/A