此书介绍了图形设计的基本原理，为图形设计人员建立了坚实的理论基础。
It offers a look at the basic fundamentals of graphic design to build a more solid foundation.
课题论述了酸碱滴定法的基本原理，为本仪器的研究奠定了理论基础。
The basic theory of acid-alkali titration is dissertated in this article, which established the theory base for the researching of this apparatus.
以光声效应的基本原理为理论基础，介绍了应用光场效应检测粉煤灰中碳含量的研究及仪器的结构设计。
By combine fundamental principle of photoacoustic response, the measuring unburnt carbon in fly ash by photoacoustic response is studied, and the instrument design is introduced.
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