大家都搜：
无循环
1、free loop───n.自由循环，自由圈；管不住的音符（歌曲名）
2、compulsion loop───强迫循环
3、sample loop───样品环；进样环路
4、loop the loop───翻筋斗; 翻跟头；翻跟斗
5、arbitrated loop───仲裁环路; 仲裁环
6、land loop───陆地环路
7、forever loop───永久循环
8、open loop───开环，开环路；[自]开环
9、loop───n.环状物、圈；弯曲的部分；环状结构；循环电影胶片；重复指令；环路；（铁道或公路的）环线；大环（芝加哥商业中心）；翻筋斗；单刃转圈；节育环；n.(Loop)（美、丹）劳鄱（人名）；v.使成环；环行；放磁带，执行计算机指令；（使飞机）翻筋斗
1、One limitation that applies to hubs and switches alike is that an Ethernet network must be loop-free.───集线器和交换机有同一个局限，即以太网网络必须是无路由循环的。
2、IGPs operate within an AS. ? BGP is used between Autonomous Systems. ? Exchange of loop-free routing information is guaranteed.───BGP的主要目标是提供一种能够保证自治XiTong间无环路的路由选择信息交换的域间路由XiTong。
3、The solution is to allow physical loops, but create a loop free logical topology.───解决方法是允许实体拓朴有迴圈，但不要让逻辑拓扑有迴圈。
4、When the databases are complete, each router uses the SPF algorithm to calculate a loop free logical topology to every known network.───当资料库建置完成了，每个路由器使用SPF演算法来计算到每个已知网路的无迴圈的逻辑拓扑。
5、Which algorithm is used to create a loop free switched topology?───哪一个算法被用于建立一个无环路的交换拓扑？
6、OSPF selects the fastest loop- free path from the SPF tree as the best path in the network.───OSPF从SPF树选择最快的无迴圈路径当做网路的最佳路径。
7、It is because certain paths are blocked that a loop free topology is possible. Data frames received on blocked links are dropped.───因为某些特定的路径被阻隔，所以才有可能建立没有迴圈的拓扑。在阻隔连结上所收到的资料讯框将被丢弃。
1、The solution is to allow physical loops, but create a loop free logical topology.
2、The loop free logical topology created is called a tree.
3、The algorithm used to create this loop free logical topology is the spanning - tree algorithm.