Painting the sides of railroad rails white to reduce derailment

> 给铁路钢轨侧面涂白以减少脱轨

HN 101 分 · 51 条评论 · 作者 zdw · 来源 www.up.com · HN 讨论

> HN 101分 · 51条评论 · 作者 zdw · 来源 www.up.com · HN 讨论

Union Pacific is the largest freight railroad in the United States, covering 23 states and approximately 7,300 communities while connecting businesses to the global economy.

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