国家干线公路 meaning in English

mational trunk highway
national trunk highway

Code for highway and main formation and administrative maintenance organizations . code for the ftrry of national highway
公路及主要构筑物管理养护单位代码国家干线公路渡口代码
Code for highway and main formation and administrative maintenance organizations . code for the tunnel of national highway
公路及主要构筑物管理养护单位代码国家干线公路隧道代码