【摘要】 本文对ＤＩＳ的需求背景，关键技术和当前在ＤＩＳ方面的应用情况进行了综合评述，并着重讨论了ＤＩＳ的总体技术特征、宽带ＷＡＮ和建模等关键技术问题。更多还原

【Abstract】 In this paper, we synthetically review the backgroup of the requirement critical technique and the current progress of the apoplications of the DIS, and focus on discussing the totle technical character wide WAN and modeling of the critical techniques of DIS.更多还原