Railroads.
the steepest grade on a given stretch of track, which determines the maximum tonnage that can be hauled in a train having a given horsepower at a stated minimum speed.
Railroads.
the steepest grade on a given stretch of track, which determines the maximum tonnage that can be hauled in a train having a given horsepower at a stated minimum speed.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012