Metadata
Author: LASER-wikipedia2
Data
English[en]
Drawing upon historical data, Robert Fogel found that the impact of railroads on the iron and steel industries was minimal: from 1840 to 1860, railroad production used less than five percent of the total pig iron produced.
Chinese[zh]
根据历史数据绘制图表,罗伯特·福格尔发现,铁路对于钢铁工业的影响是最小的:在1840年到1860年间,铁路产品使用了不到5%的当时所生产的生铁(pig iron)。