这两个组在安装过程中用来确保执行存储节点角色的服务器可以接收特定的二进制文件和配置文件，这在下面会详细进行介绍。

These groups are used during installation to ensure servers that perform storage node roles receive specific binary files and configuration files, which are detailed below.

youdao

着重介绍在VB下以中断方式接收、二进制方式传输、文件操作，以及如何设计串行通信协议等问题。

The followings are in detail:the interrupt receive, transmission in binary system, files operations and serial com-munication protocol design.

youdao

着重介绍在VB下以中断方式接收、二进制方式传输、文件操作，以及如何设计串行通信协议等问题。

The followings are in detail:the interrupt receive, transmission in binary system, files operations and serial com-munication protocol design.

youdao