Home / Standards / GB/T 15445.4-2006 GB/T 15445.4-2006 Active Representation of results of particle size analysis - Part 4: Characterization of a classification process 粒度分析结果的表述 第4部分：分级过程的表征 Standard Type GBT ICS N/A CCS A28 Status 现行 Issue Date 2006-02-05 Implementation 2006-08-01 Responsible Dept 国家标准委 Drafting Unit N/A