该规范EPUB Publications 3.0定义了EPUB的发布级语义和一致性要求？3，包括包文档的格式以及如何将该文档和其他出版物资源相关联以创建一致的EPUB出版物的规则。本规范是组成EPUB 3的一系列相关规范之一，EPUB 3是基于XML和Web标准的数字出版物交换和传递格式的第三次主要修订。它应该与组成EPUB 3的其他规范一起阅读和理解:？-EPUB 3概述，它提供了EPUB的信息性概述和EPUB 3文档的其余部分的路线图。应该先看概述。-EPUB内容文档3.0，它定义了在EPUB出版物上下文中使用的XHTML、SVG和CSS的配置文件。-EPUB Open Container Format(OCF)3.0，其定义了用于将一组相关资源封装到单文件(ZIP)EPUB容器中的文件格式和处理模型。-EPUB Media Overlays 3.0，其定义了用于文本和音频同步的格式和处理模型。本规范取代开放包装格式2.0.1。有关本规范与其前身之间差异的信息，请参考EPUB3变更。

This specification, EPUB Publications 3.0, defines publication-level semantics and conformance requirements for EPUB？ 3, including the format of the Package Document and rules for how this document and other Publication Resources are associated to create a conforming EPUB Publication.
This specification is one of a family of related specifications that compose EPUB 3, the third major revision of an interchange and delivery format for digital publications based on XML and Web Standards. It is meant to be read and understood in concert with the other specifications that make up EPUB 3: 
- The EPUB 3 Overview, which provides an informative overview of EPUB and a roadmap to the rest of the EPUB 3 documents. The Overview should be read first.
- EPUB Content Documents 3.0, which defines profiles of XHTML, SVG and CSS for use in the context of EPUB Publications.
- EPUB Open Container Format (OCF) 3.0, which defines a file format and processing model for encapsulating a set of related resources into a single-file (ZIP) EPUB Container.
- EPUB Media Overlays 3.0, which defines a format and a processing model for synchronization of text and audio.
This specification supersedes Open Package Format 2.0.1. Refer to EPUB3 changes for information on differences between this specification and its predecessor.