At present, the research objects of most hazard assessment are single hazard resource and process.

目前, 绝大多数危险性评价所研究的对象是单一的危险源或危险过程.

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Hazard assessment is one of the difficult technical issues for expressway construction in mined - out region.

采空区的危害性评价是矿区高速公路建设关键技术难题之一.

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The up - to - date technique of process hazard assessment called Layers of Protection Analysis ( LOPA ) is described.

介绍了一种在工程设计中最新采用的安全分析方法——防护层及防护层分析 ( LOPA ) .

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