通过对现有远程教育系统和网络模型的研究，提出五层结构的三维远程教育系统设计方案。
According to the study on existing design plan of long-distance education system, this paper proposed a systematic design of long-distance education based on 5-level structure modeling.
通过对现有远程教育系统和网络模型的研究，提出五层结构的三维远程教育系统设计方案。
According to the study on existing design plan of long-distance education system, this paper proposed a systematic design of long-distance education based on 5-level structure modeling.
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