Chapter 2 describes the system part of MPEG-2 standard with focuses on PSI (Program Specific Information) and PCR (Program Clock Reference).
第二章主要讲述了MPEG - 2标准系统层规范，着重介绍节目特殊信息PSI和节目时钟参考pcr。
The service information (SI) is the data used to describe transport system, transport content and data stream time table, and also is the additional data used to complement MPEG-2 PSI.
业务信息（SI ）是用来描述传送系统、传送内容和广播数据流时间表等的数据，是补充MPEG 2节目说明信息（PSI）的附加数据。
The service information (SI) is the data used to describe transport system, transport content and data stream time table, and also is the additional data used to complement MPEG-2 PSI.
业务信息（SI ）是用来描述传送系统、传送内容和广播数据流时间表等的数据，是补充MPEG 2节目说明信息（PSI）的附加数据。
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