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文章针对天津地铁4号线环控系统方案与设计原则存在的问题,逐一进行了理论与应用分析,提出了改进观点。
According to the problems of the scheme and design principle of the loop control system of Tianjin Metro Line 4, the article analyzes the theory and application one by one, and puts forward the improvement point of view.