Later, the research aim and process about environmental risk information management system of hazardous materials railway transportation are put forward.
随后，提出铁路危险货物运输环境风险管理信息系统的设计目标以及研究思路。
Later, the research aim and process about environmental risk information management system of hazardous materials railway transportation are put forward.
随后，提出铁路危险货物运输环境风险管理信息系统的设计目标以及研究思路。
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