railroad line

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

同义词：railwayrailroadrailway linerailway system

System for occupancy detection in a railroad line and for digital communication with trains that run along said railroad line
Railroad crossing structures for spotted turtles: Massachusetts Bay Transportation Authority–Greenbush Rail Line wildlife crossing ...
Design of Longitudinal Cross-section of Railroad Line Together With Construction Development of Subgrade in Permafrost Regions (Base...
main patterns of distribution of the ixodid ticks along the Amur-Bureya region of the Baikal-Amur main railroad line
An Analysis of Stream Culvert Fish Passage on the Navy Railroad Line between Bremerton and Shelton, Washington
EFFECTS OF TRACK MAINTENANCE ON THE RELIABILITY OF A SINGLE TRACK RAILROAD LINE AS A FUNCTION OF AXLE LOAD.
THE CONSTRUCTION TECHNIQUE OF EXTRA HUGE PEDESTRIAN BRIDGE OVER THE EXISTING RAILROAD LINE IN SERVICE
Paving a way for the railroad line
An Image of Railroad Line Area and Its Structure
A COMPARISON BETWEEN A LINE NETWORK MODEL AND A SIMULATION MODEL IN SINGLE STRETCHES OF RAILROAD LINE