分析了铅中毒的机理，建立了铅中毒的致因模式和铅中毒的事故树，提出了预防铅中毒的方法和措施。
The mechanism of plumbic poisoning was analyzed, the causal mode of plumbic poisoning and the Fault Tree were established, and the measures to protect plumbic poisoning were put forward.
为了探求伤亡事故的发生机理，就有必要探索水利水电工程施工伤亡事故的致因特征。
In order to seek the happening mechanism of the injury and death accidents, it is necessary to seek the characteristics of the contributing factors of the accidents.
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