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怪不得，USB的机器最大速度就是4速。看来您就将就用吧，一张碟40分钟左右吧？

heian(㊣天使)

USB的带宽是12Mbit，但是在实际情况中使用率不会超过70%，甚至在50%以下。

(#261785@0)
Last Updated: 2001-11-14
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