In this thesis, firstly the author tries to analyze the definition, the classification and formation of euphemism and clarify the relationship between euphemism and language.

本文首先从委婉语作为一种语言学概念入手，分析委婉语的定义、分类、构成以及委婉语与语言之间的关系。

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This paper reviews the synthesis, classification, formation mechanism, morphology control and application of mesoporous materials.

综述了介孔材料的合成方法、分类、形成机理、形貌控制和应用。

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According to a multitude of researches inside and outside China, classification, formation, properties of micelle and its application in luminosity analysis are inducted and commented.

根据国内外大量的研究，对胶束的分类、形成、特性及其在光度分析中的应用作了归纳和评述。

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