基本释义
相关例句
trunk line
5.a railway line that branches from the trunk line and then rejoins it later on.
7.Like any highway system, the federal airways have their main trunk line.
8.The traffic trunk line is a basic premise of the development of TEB.
9.Increasing Speed of Trains Running on Busy Trunk Line Improving Car Structure to Increase Train Speed
10.Realize the connection among trunk line, branch line and user allocation system using dark line transmission which is modern and scientific. It can ensure the application of signal index belong to the CATV′s end-user.
