Home / Standards / GB/T 4196-1984 GB/T 4196-1984 Active Method for testing the density of tungsten and molybdenum bars 钨、钼条密度测定方法 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