在系统设计阶段，本文主要对系统的网络结构设计，子系统的划分，人机交互部分设计，数据库的设计进行了论述。
In the system design stage, the author mainly discusses the design of sub-system, person-machine mutual design and database design.
在系统设计阶段，本文主要对系统的网络结构设计，子系统的划分，人机交互部分设计，数据库的设计进行了论述。
In the system design stage, the author mainly discusses the design of sub-system, person-machine mutual design and database design.
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