EN 27487(PART 3)-1989 信息处理.数据交换用130mm(5.25 in)改进调频制记录,密度为7958 ftprad,3.8 tpmm(96 tpi)的双面软磁盘.第3部分:磁道格式B
Information Processing Data Interchange on 130 mm (5.25in) Flexible Disk Cartridges Using Modified Frequency Recording at 7958 ftprad, 1.9tpmm (48tpi), on Both Sides - Part 3: Track Format B