It is hard to build a precise math model for counter-gravity casting process for its time lag, uncertainty and complexity.

由于反重力铸造过程的时滞性、不确定性、复杂性，难以建立精确的数学模型。

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Chinese enterprise under such conditions, facing the uncertainty and complexity of the environment, experiencing a severe challenge.

中国企业在这样的条件下，面对环境的不确定性和复杂性，正在经历一个严峻的挑战。

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The method is a better solution for problems of adaptive control for object with features of uncertainty and complexity as well as precise control by fuzzy control.

采用该方法，较好地解决了具有不确定性和复杂特性对象的适应控制和模糊控制用于较高精度控制的问题。

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The event, the forum's 33rd annual summit, has been themed 'Building Trust' to reflect that the WEF termed "an extraordinary climate of global uncertainty and complexity".

BBC: Economic gloom at Davos forum

In today's climate of volatility, uncertainty, complexity and ambiguity (the "VUCA world" that the futurist Bob Johansen explores in Leaders Make the Future), they matter even more.

FORBES: Magazine Article

There he had been schooled in the concept of VUCA: volatility, uncertainty, complexity, and ambiguity.

FORBES: Lessons from Running GM's OnStar