Rough set theory is a new math tool in dealing with fuzzy and uncertain knowledge.

粗糙集理论是一种处理模糊和不确定知识的新型数学工具。

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As a usually math tool, Fourier transform is using in math, physical and engineering field widely.

傅里叶变换是一种常用的数学工具，在数学、物理及工程技术领域都得到了十分广泛的应用。

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Combining with the experiments of heat treatment, heat action results are compared by using fast calculation math tool of heat action of arbitrarily distributed beam.

并结合热处理实验，采用任意分布光束热作用快速计算的数学工具对热作用结果进行比较研究。

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But it wasn't until math met merchant in the free West that it became a tool of social advancement.

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Called the Scales for Rating the Behavioral Characteristics of Superior Students, this tool lists dozens of characteristics of gifted children under categories that range from leadership and communication to math to art and music.

FORBES: Do You Have A Gifted Child?