In this review some basic concepts and principles of chemical pattern recognition technologies are introduced, as well as some advances and applications in pharmaceutical analysis.
介绍化学模式识别技术的一些基本概念和原理，以及在药物分析中的应用与研究进展。
Marginal analysis is therefore one of the most important principles of economic theory, and one must study a few concepts of economic theory before one can proceed.
因此，边际分析是经济理论中最重要的原则之一，而且这个概念必须和几个概念同时研究才可以进行。
Through our country, the United States, Canada, comparison of the three materials-based analysis of the basic concepts primary school science and basic principles of composition.
通过对我国、美国、加拿大三国教材的比较，分析小学科学教材的基本概念和基本原理的构成。
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