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
- closed ecosystem
- closed edge sequence
- closed edge train
- closed elastic drive
- closed element
- closed embedding
- closed-end fund
- closed equivalence relation
- closed expression
- closed extension
- closed family of sets
- closed field
- closed filament
- closed filter
- closed fishing areas
- closed fishing season
- closed-flux device
- closed fork mounting
- closed form
- closed-form number
- closed-form solution
- closed formula
- closed fuel cycle
- closed function
- closed geodesic