NF Z64-731-1987
信息处理.以252 ftpmm(6400 ftpi)进行信息记录的6.30 mm(0.25in)道盒式磁带上的数据交换.第1部分:物理、机械和磁性能
Information processing. Data interchange on 6,30 mm (0,25 in) magnetic tape cartridge using imfm recording at 252 ftpmm (6400 ftpi). Part 1 : mechanical, physical and magnetic properties.
