subject heading

基本解释

The Email object contains properties such as the sender's address, the recipient's address, a subject heading, and a message body, as shown in Listing 5.
如清单 5 所示， Email 对象包含了诸如发件人地址、收件人地址、主题栏和消息正文等属性。
These are aids to finding articles on any subject. They list subject heading, with various titles of articles under them, together with the location of each article.
这些都可帮助你在任意主题上能找到相关文章。他们列出主标题，而主标题之下有文章的各式小标题还有每篇文章的所在位置。
SKOS: Keep in touch with developments in knowledge organization systems (KOS) such as thesauri, classification schemes, subject heading systems and taxonomies within the framework of the Semantic Web.
SKOS：随时关注知识组织系统（KOS）方面的开发，例如语义 Web 框架中的辞典、分类模式、主题（subject heading）系统和分类法。