This paper investigates risk evaluation of single-category mass freight transportation in local railway networks.
本文探讨单一品类大宗货物铁路局部运输网络的风险评价。
Mass freight transportation is one of the main tasks of railways.
大宗货物运输是铁路运输的主要内容之一。
Mass freight transportation is one of the main tasks of railways.
大宗货物运输是铁路运输的主要内容之一。
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