在网络分析领域，偏移量是一个频繁出现的术语，如IP分段偏移量、TCP偏移量、位偏移，基于数据包偏移、基于协议偏移等。本文章对这些概念以图文并茂的形式进行了讲解。-In the field of network analysis, offset is a frequent terms, such as the IP sub-Offset, TCP offset, digital offset, packet-based offset, offset, etc. Based on the agreement. This article illustrated these concepts to explain the forms.