本文首先对自然灾害的种类、特征及其应急管理体制进行了分析，阐述了应急供应链的基础理论与运行机制。
This paper first analyzes the varieties, characteristics and emergency management mechanism of natural calamities, illustrates basic theory and operation mechanism of emergency supply chain.
2003年后疫情，北京市颁布了正式的危机管理体制与新的法律，委员会和一系列国家，部门和特殊情况的应急计划。
In 2003 after the SARS epidemic, Beijing enacted a formal crisis-management system with new laws, committees and a series of national, departmental and special-situation contingency plans.
2003年后疫情，北京市颁布了正式的危机管理体制与新的法律，委员会和一系列国家，部门和特殊情况的应急计划。
In 2003 after the SARS epidemic, Beijing enacted a formal crisis-management system with new laws, committees and a series of national, departmental and special-situation contingency plans.
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