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| 每磁道磁头数 | |||
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| 每磁道一个磁头; 单磁头磁道制 | |||
| 每道磁头数 | |||
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| 每磁道一个磁头 | |||
| heads per track: 2 phrases in 2 subjects |
| Electronics | 1 |
| Information technology | 1 |
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