network functional architecture网络: network; electric network me ...功能: function体系: system; setup; hierarchy网络功能块: nfb network function block交换网络功能块: snb switching network block下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:网络功能体系,即可在微信中查询翻译