- In SNA, a field in each transmission header (TH) that indicates the format of the TH; that is, the presence or absence of certain fields. Transmission header formats differ in accordance with the types of nodes between which they pass.; 在系统网络体系结构(SNA)中,每个传输头(TH)中的一种表示传输头格式的字段, 即某些字段出现与否。传输头格式按其经过的网点类型不同而异。
下载手机词典可随时随地查词查翻译