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一、引言局部网络是计算机学科中目前最热门的技术之一,发展十分迅速。有人统计,局部网络系统的组建每年大约以30%的速度在增长。局部网络具有以下特点:
I. INTRODUCTION Local network is one of the most popular technologies in computer science at present and its development is very rapid. Some statistics, the formation of local network system at about 30% annual growth rate. Local network has the following characteristics: