罗伯特·史蒂文斯上校,约翰·史蒂文斯的儿子之一,发明的T -铁路,是当今世界所使用铁轨的雏形。
Robert Stevens, one of Col. John Stevens' sons, invented the T-rail, the form of railroad track in use today throughout the World.
罗伯特·史蒂文斯上校,约翰·史蒂文斯的儿子之一,发明的T -铁路,是当今世界所使用铁轨的雏形。
Robert Stevens, one of Col. John Stevens' sons, invented the T-rail, the form of railroad track in use today throughout the World.
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