The uncertain factors affecting reliability of structures include not only stochastic uncertainty but also fuzzy one.

影响结构可靠性的因素除了具有随机性以外，往往还具有模糊性。

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CCPM puts the uncertain factors in every single working procedure all together into buffer to absorb the uncertain factors.

关键链项目管理同时将单个工序的不确定因素统一放在缓冲区考虑，这样可以吸收项目中的不确定因素。

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Considering the uncertain factors of the slope stability and shoring design, this paper adopts reliability theory to analyze the stability.

考虑边坡工程稳定性分析与支护设计存在不确定因素，本文还利用可靠性理论，对边坡设计方案进行了可靠度分析。

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The combination of those key factors Revis's uncertain health, his asking price for a new deal and the Jets' need to rebuild made trading him inevitable.

WSJ: Darrelle Revis, Tampa Bay Buccaneers, New York Jets: Jets Trade Revis to Buccaneers

The problem with the study, Diet Soft Drink Consumption is Associated with an Increased Risk of Vascular Events in the Northern Manhattan Study ( Gardner et al., Journal of General Internal Medicine) is that the numbers are low enough to leave us uncertain as to whether diet drinks were the cause or simply correlated with other factors that led to these events.

FORBES: Will Drinking Diet Soda Increase Your Risk For A Heart Attack?

Since oil prices and other factors are uncertain, in other words, the mere option to produce has value.

ECONOMIST: Economics focus