The theory of process types in the transitivity system is a very important part in the Systemic-Functional Grammar by M.
经验功能及物性系统过程理论是韩礼德系统功能语法的重要组成部分。
The theory of theme and rheme is an important functional system where cohesion and coherence of discourse is studied.
主述位理论又是研究语篇衔接与连贯的一大功能系统。
The most important characteristics of functional linguistic theory is that it pays special attention to the study of the relations between the linguistic system and the outside world.
功能语言学理论的最突出的特点之一是其重视研究语言系统和外部环境之间的关系。
Coherence is always an emphasis of college English writing. Theme-rheme theory is another functional system which favors discourse cohesion and coherence.
连贯是大学英语写作教学中的一个重点，主述位理论又是促成语篇衔接与连贯的一个功能系统。
Functional analysis of signal and system is a modern analytical method which is used for describing and studying the properties of signals and systems by means of functional analysis theory.
信号与系统的泛函分析是以泛函理论为工具描述和研究信号与系统特性的近代分析方法。
Based on density functional theory (DFT) and B3LYP method, we made a theoretical study of the reaction system involving organic transitional metal compound. We studied the mechanism of each reaction.
本文采用密度泛函理论B3LYP方法对有机过渡金属化合物参与的化学反应体系进行了理论研究。
Applying the theory of integral equation and functional analysis, we prove the existence and uniqueness of the system solution to the equation, and get the analytical expression of the solution.
运用泛函分析和积分方程理论，证明了系统解的存在性与唯一性，得到系统解的解析表达式。
Applying the theory of integral equation and functional analysis, we prove the existence and uniqueness of the system solution to the equation, and get the analytical expression of the solution.
运用泛函分析和积分方程理论，证明了系统解的存在性与唯一性，得到系统解的解析表达式。
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