The safety pre evaluation is a complex technology economic system engineering and it is complex due to influential factors, on relation variables and constraining conditions.
安全预评价是一个复杂的技术经济系统工程，其影响因素、关联变量和约束条件复杂。
This makes the evaluation of mine safety to be established on a rational theoretical basis, in which the relative risk index could be adopted directly as the pre-warning index of mine risk.
使矿山的安全评价建立在合理风险理论的基础之上，其中相对险度指标可直接作为风险预警指标使用。
ObjectiveTo explore the application of the material safety data sheet (MSDS) in pre-evaluation of occupational hazards in constructing engineering projects.
目的探索物质安全数据表(MSDS)在建设项目职业病危害预评价中的应用。
ObjectiveTo explore the application of the material safety data sheet (MSDS) in pre-evaluation of occupational hazards in constructing engineering projects.
目的探索物质安全数据表(MSDS)在建设项目职业病危害预评价中的应用。
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