石油烃污染场地健康风险评价研究进展 观察到的有害作用水平（no observed adverse effect level,NOAEL）和不确定系数(uncertainty factor,UF)来推导出可接受的某种有阈化学物的参考剂量(reference dose,RFD)： 式(3-1)
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石油烃污染场地健康风险评价研究进展 观察到的有害作用水平（no observed adverse effect level,NOAEL）和不确定系数(uncertainty factor,UF)来推导出可接受的某种有阈化学物的参考剂量(reference dose,RFD)： 式(3-1)
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结果中学教师自我原因不确定感对其状态焦虑和特质焦虑都有着显著的预测作用，决定系数分别为8.1%和13.0%。
Results Causal-uncertainty of middle school teachers had apparent prediction function to their state and trait anxiety, and the decisive coefficients were 8.1% and 13.0% respectively.
传统的结构设计和强度校核，是建立在确定性方法的基础上，只是利用经验确定的安全系数来描述各种随机不确定性对结构性能的影响。
The deterministic method, which USES the safety factor decided by experience to describe the effects of random uncertainty on the structure, doesn't solve the random problem.
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