该封包文件是二进制文件，文件中包含若干个Ethernet帧，其中有正确的帧，也有错误的帧。正常Ethernet帧的数据字段封装的是上层数据报，而本光盘提供的Ethernet帧封包文件中，数据字段封装的是文本信息。-The packet file is a binary file, the file contains a number of Ethernet frames, including the right of the frame, but also the wrong frame. Normal Ethernet frame data field is the upper packet encapsulation, and this CD-ROM Ethernet frame packets provided by the file, the data field is a text message package.

朗读显示对应的拉丁字符的拼音