Home / Standards / GB/T 11107-1989 GB/T 11107-1989 Abolished Metallic and its compound powder--Determination of specific surface and particle size by air permeating method 金属及其化合物粉末 比表面积和粒度测定 空气透过法 Standard Type GBT ICS 77.040.30 CCS H21 Status 废止 Issue Date 1989-03-31 Implementation 1990-03-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A