China 'GB/T 3654.1-1983
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 3654.1-1983
Methods for chemical analysis of ferroniobium--The paper chromatograph-gravimetric method for the determination of niobium and tantalum content 铌铁化学分析方法 纸上色层分离重量法测定铌、钽量
Issued Date:1983-05-02
Implemented Date:1984-03-01
Issued by:
The Standardization Administration of the People's Republic of China