EN 28860(PART 2)-1989 信息处理.数据交换用90 mm(3.5 in)改进调频记录的密度为7958ftprad,每面80磁道软磁盘.第2部分:磁道格式
Information Processing Data Interchange on 90mm (3.5in) High Density Flexible Disk Cartridges Using Modified Frequency Modulation Recording at 7 958 ftprad 5.3tpmm (135itpi) on Both Sides Part 2: Track Format