91/63785 DC被替代
Implementation Of Iso/iec 1864 Information Processing - Unrecorded 12.7 Mm (0.5 In) Wide Magnetic Tape For Information Interchange - 32 Ftpmm (800 Ftpi), Nrz1, 126 Ftpmm (3 200 Ftpi) Phase Encoded And 356 Ftpmm (9 042 Ftpi) Nrz1 (iso/iec Dis 1864)
出版：British Standards Institution
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