系统的数据流程图描述了作者层与读者层两个工作层面之间相互切换以及它们同系统之间相互通讯的关系。
The switching between author and reader levels and their intercommunication with the system may be described by a data flow graph.
系统的数据流程图描述了作者层与读者层两个工作层面之间相互切换以及它们同系统之间相互通讯的关系。
The switching between author and reader levels and their intercommunication with the system may be described by a data flow graph.
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