本文根据不确定性信息的不同表现将不确定性分为随机性、模糊性、灰性和未确知性四种不确定性。
The uncertainty of objective is divided into four kinds in this paper. There are randomness, fuzziness, greyness and unascertained.
本文主要对项目风险的评估方法进行研究，围绕风险评估中未确知信息（专家意见）对评估结果带来的不确定性展开工作。
This thesis studies on the assessment method for project risk, and mainly works around the uncertainties of assessment result aroused by the unascertained information in the risk assessment process.
针对工程机械质量评价过程中，评价信息的不完全性和不确定性，建立了处理未确知信息的未确知决策模型。
Aiming at the incompleteness and uncertainty of the information to be appraised in appraising the quality of hydraulic excavator digger, we establish the unascertained decision model to deal with it.
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