Home / Standards / GB/T 4193-1984 GB/T 4193-1984 Active 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 Standard Type GBT ICS 77.040.30 CCS H21 Status 现行 Issue Date 1984-03-09 Implementation 1984-11-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A