cpmm 中文意思是什麼
cpmm
解釋
磁帶成組編碼方式246-
9 - track, 12. 7 mm wide magnetic tape for information interchange - format and recording using group coding at 246 cpmm
信息交換用9磁軌12 . 7mm磁帶. 246cpmm分組編碼格式和記錄 -
1 2. 1491cpmm 37981cpi. information systems - magnetic tape and cartridge for information interchange - 18 - track, parallel, 1 2 inch 12. 65 mm, 37 871 cpi 1491 cpmm, group - coded - requirements for recording
信息系統.信息互換用的磁帶和盒式磁盤.群碼的， 18道.并行. 12 . 65mm -
9 - track, 12. 7 mm wide magnetic tape for information interchange - format and recording, using phase encoding at 63 cpmm
信息互換用9磁軌磁12 . 7mm帶. 63cpmm相位編碼的格式和記錄
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