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本文通过对ＲＡ线路、域的委托信任关系、企业需求和环境的研究给出了一种安全、经济实用的基于ＷＡＮ 的ＭＩＳ实例。
This paper gives a safe, economical and practical example of WAN-based MIS through the research on trust relationship, enterprise requirements and environment of RA lines and domains.