工学 城域网 释 metropolitan area network 城域网 一种介于局域网与广域网之间，覆盖一个城市的地理范围，将同一区域内的多个局域网互联起来的中等范围的计算机网。属于中距离的传输网络。城域网位于骨干网和接入网的汇接处，在信息传输网络中处于承上启下的位置。
网络与数据通信 协议体系与组成结构 释文 metropolitan area network, MAN 城域网
- reel-up percentage of cocoons
- re-emission
- re-employment policy
- re-employment project
- re-employment training
- reenchantment
- reentrant
- re-entrant angle
- reentrant angle
- reentrant cavity
- re-entrant circuit
- reentrant effect
- reentrant excitation
- reentrant nematic phase
- reentrant superconductor
- reentry
- re-entry altitude
- re-entry angle
- re-entry communication
- reentry control
- re-entry corridor
- re-entry data capsule
- re-entry distance
- re-entry flight characteristics of warhead
- reentry guidance