railroads

n.

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

同义词：railwayrailroad linerailway linerailway system

a line of track providing a runway for wheels

"he walked along the railroad track"

同义词：railroad trackrailway

Railroads and American Economic Growth
Railroads and American economic growth :
Railroads and the Raj: the economic impact of transportation infrastructure
American Railroads and the Transformation of the Antebellum Economy
Are roads and railroads barriers to bumblebee movement in a temperate suburban conservation area?
Optimal Pacing of Trains in Freight Railroads: Model Formulation and Solution
Aspiration Performance and Railroads' Patterns of Learning from Train Wrecks and Crashes
Railroads and American Economic Growth: Essays in Econometric History. By Robert William Fogel. Baltimore, Md.: Johns Hopkins Press ...
Productivity Growth, Scale Economies, and Capacity Utilization in U.S. Railroads, 1955-74
The Relative Efficiency of Public and Private Firms in a Competitive Environment: The Case of Canadian Railroads