一个类别定义了一个特定种类的设备：移动电话、简单寻呼机和电脑记事本都是单独的类别。

A category defines a particular kind of device; cellular telephones, simple pagers, and organizers are separate categories.

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尽管书商可能决定把这本书放到某一个类别下面，但是它在电脑系统里可能属于好几个BISAC的类别。

Though the bookseller might decide to shelve the book in one category, that book may have multiple BISAC headings assigned to it in the computer system.

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不过真正的问题是，iPad是否能够成功地使平板电脑成为一个可行的电子产品类别。

But the real question is whether the iPad will succeed in making a space for the tablet computer as a viable category.

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