信息处理 数据交换用130 mm改进调频制记录的位密度为13262磁通翻转/弧度、每面80条磁道的软磁盘 第三部分:磁道格式B(用于80条磁道)
Information processing--Data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftprad, on 80 tracks on each side--Part 3:Track formatB for 80 tracks