The importance of evaluation of maintenance service quality was pointed out and its hierarchy structure was constructed. Analysis model and calculation method were put forward with a specific example.
分析了进行维修服务质量评价的重要性，建立了维修服务质量评价的层次结构，提出分析模型和计算方法，并给出了一个具体实例。
The analysis theory of fixture abstract information structure hierarchy is put forward.
提出了夹具抽象信息结构层次分析理论。
An overall analysis of factors influencing the safety system of metro running tunnel was carried out; a Hierarchy structure Model is set up.
较全面分析了影响地铁区间隧道安全体系的各个因素，建立了层次结构模型。
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