SJ/Z 9089.1-1987数据交换用6.30mm宽,密度为394磁通翻转/毫米,39字符/毫米,成组编码记录的盒式磁带Information processing-Data interchange on 6.30mm magnetic tape tartridge using GCR recording at 394 ftpmm,39 cpmm-Part 1: Mechanical,physical and magnetic properties SJ/Z 9089.1-1987数据交换用6.30mm宽,密度为394磁通翻转/毫米,39字符/毫米,成组编码记录的盒式磁带Information processing-Data interchange on 6.30mm magnetic tape tartridge using GCR recording at 394 ftpmm,39 cpmm-Part 1: Mechanical,physical and magnetic properties

SJ/Z 9089.1-1987数据交换用6.30mm宽,密度为394磁通翻转/毫米,39字符/毫米,成组编码记录的盒式磁带Information processing-Data interchange on 6.30mm magnetic tape tartridge using GCR recording at 394 ftpmm,39 cpmm-Part 1: Mechanical,physical and magnetic properties

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