Information Processing - Data Interchange on 130 mm (5.25 in) Flexible Disk Cartridges Using Two-Frequency Recording at 7 958 ftprad, 1,9 tpmm (48 tpi), on One Side - Part 1: Dimensional, Physical and Magnetic Characteristics (Second Edition)
中国标准分类号: G(化工) ; G83(磁记录材料) | 实施日期:1985-01-01
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