A data carrier mounted and demounted as a unit, for example, a reel of magnetic tape, a disk pack.

可作为一个部件安装和卸下的存储数据的介质，例如，一个磁带卷，一个磁盘组。

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A data carrier mounted and demounted as a unit, for example, a reel of magnetic tape, a disk pack.

可作为一个部件安装和卸下的存储数据的介质，例如，一个磁带卷，一个磁盘组。

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