deweydecimalsystem是什么意思_deweydecimalsystem怎么读_deweydecimalsystem造句和翻译

发布时间:12-15

deweydecimalsystem

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n.1.a system of classifying library books that divides them into ten main classes, divided in turn into categories with three-digit numbers and subcategories with numbers after a decimal point

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