With the emergence of the Internet,intranets,network PCs and an increasing number of workers who need access to repositories of enterprise information,large-scale network computing is replacing old models of centralized and distributed computing.

• 随着互联网、内部网和网络PC机的兴起，以及需要访问公司信息仓库的工作人员数量的不断增加，大规模的网络计算正在代替旧有的集中式和分布式计算模型。