TRIZ is solves the innovation problem theory and the method.

TRIZ是解决创新性问题的理论和方法。

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Based on the inverse problem theory, it is explained that building the constitutive models of rock and soil is an inverse problem and four basic steps for modeling constitutive relations are proposed.

根据反问题的理论，阐明了建立岩土本构模型属于反问题，提出了建模的四个基本步骤。

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In theory, at least, the problem is that there are very many choices to make.

至少在理论上，问题在于我们要做太多选择。

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Studies support the theory that there are several causes, instead of a single environmental cause or genetic problem.

VOA: special.2009.01.06

In fact,so what we see is,the body theory is in exactly the same problem, exactly the same situation,as the personality theory.

事实上，从我们所见能得出，肉体理论，和人格理论具有一样的问题和情况。

耶鲁公开课 - 死亡课程节选

A big problem with this is a lot of Freudian theory is claimed to be validated in the course of psychoanalysis.

这里存在的一个大问题便是,精神分析理论中的很多内容,被认为是能够在精神分析的过程中,得到证实的。

耶鲁公开课 - 心理学导论课程节选

I've long been a believer in the "look at the solution, not the problem" theory.

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There is but one, small problem with the theory as applied to the world we now inhabit.

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However, there is one problem with that theory: the iWatch name might not have been concocted by Apple.

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