虽然不用属性也可以对所有数据进行建模，但是对于预先知道不会重复(对于每个元素而言)，也没有任何子字段的数据项，使用属性仍是最直观的选择。
Although you could model all your data without attributes, they can be a very intuitive choice for data items which are known in advance to never repeat (per element) nor have any sub-fields.
mst子命令输出中的数据字段。
用于基准测试的大型文档weblog . xml包含大约8,500个元素，每个元素都含有相同的子字段集合-这是一个面向数据的xml文档的典型布局。
The large weblog.xml document used for benchmark tests contains about 8,500 elements, each having the same collection of child fields — a typical arrangement for a data-oriented XML document.
在允许的地方，分隔数据字段中相邻的子组件。如果没有子组件，该字符将被忽略。
Separates adjacent subcomponents of data fields where allowed. If there are no subcomponents, this character may be omitted.
由于它的经验根及其应用，统计数据通常被认为是不是一个子字段的纯数学，而是一个独特的分支应用数学。
Because of its empirical roots and its applications, statistics is generally considered not to be a subfield of pure mathematics, but rather a distinct branch of applied mathematics.
机读目录的字段指示符往往被编目员忽视，从而导致了子字段数据出现错误或字段功能无法实现。
Cataloguers always ignore field indicator in MAC, and this lead to appear error in subfield or unrealized field function.
机读目录的字段指示符往往被编目员忽视，从而导致了子字段数据出现错误或字段功能无法实现。
Cataloguers always ignore field indicator in MAC, and this lead to appear error in subfield or unrealized field function.
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