The source of Qu is the core problem of study about relationship of Ci and Qu.
曲源问题是曲学研究中的一个核心问题。
The main problem of study on Olympic economic shock model is to weaken its negative effects.
削弱这些负面效应的影响是奥运经济冲击模型研究要解决的主要问题。
The strength mismatch of girth weld is a concerned problem of study and application of pipeline.
环焊缝强度匹配是天然气管道研究与应用的热点问题。
The introduction firstly sets forth problem of study and value of study; sorts correlative literature and then explains the feasibility to choose nation-state theory as analyzing framework.
导论部分，先阐述问题以及研究价值，后梳理紧密相关的研究文献，再说明本文选取的民族-国家理论作为分析框架的可行性。
The introduction firstly sets forth problem of study and value of study; sorts correlative literature and then explains the feasibility to choose nation-state theory as analyzing framework.
导论部分，先阐述问题以及研究价值，后梳理紧密相关的研究文献，再说明本文选取的民族-国家理论作为分析框架的可行性。
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