1·Each domain provides a separate domain specialization entity to list the specializations that it provides for a base element.
每个域都提供一个单独的域专门化实体来列出了它为基本元素提供的专门化。
2·Each base content element has an element entity to identify itself and its specializations.
每个基本内容元素都有一个元素实体来标识其自身及其专门化。
3·A split row with a blank cell: the new specializations are in addition to the more general element, which remains available in the specialized type.
带有空白单元格的分隔行：新的专门化增加到更一般的元素之上，该元素仍然可以在专门化类型中使用。
4·Thus, topics written against one of the supplied DTDs can use all of the predefined domain specializations.
这样，针对某个提供的DTD来编写的主题可以使用所有预定义的域专门化。
5·It has a built-in specialization mechanism, which includes the capability to restrict allowable specializations.
它具有内置的专门化机制，包括限制许可的专门化的能力。