The functional structure of system is divided into key function layer, conference affair management layer and the network management layer.
系统功能结构划分为三层：核心功能层，会务管理层和网络管理层。
The functional structure of system is divided into key function layer, conference affair management layer and the network management layer.
系统功能结构划分为三层：核心功能层，会务管理层和网络管理层。
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