NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 4193-1984
Method for measuring the density of the fine wire and ribbon of tungsten and molybdenum used in electric light sources and vacuumtubes 电真空器件及电光源用细钨丝、钼丝和薄带密度的测试方法
Issued Date:1984-03-09
Implemented Date:1984-11-01
Issued by:
The Standardization Administration of the People's Republic of China