n.

line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight

同義詞：railwayrailroadrailroad linerailway system

the road consisting of railroad track and roadbed

同義詞：linerail line

Railway line
Railway line
On solving multi-type railway line planning problems
Models and algorithms for railway line planning problems
Models and Algorithms for Railway Line Planning Problems
A Branch-and-Cut Approach for Solving Railway Line-Planning Problems
Ozone and Chemical Resistant Coating for Railway Line Elastomeric Components
The Politics of Divestment: Passing the Buck along the Railway Line
Measurements of transient ground movements below a ballasted railway line
Effect of Strong Cross-wind on the Stability of TrainsRunning on the Lanzhou-Xinjiang Railway Line