We propose an approach to identify the main factors that significantly affect the regular mentality of recruits, which is based on a mentality-affecting factor tree and a mathematical model.

通过构建影响新兵经常性思想工作的因素树和数学模型，提出了一种用于确定影响新兵经常性思想工作诸多因素中主要因素的方法。

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A new mathematical model for carbon loss of CFB boiler with considering all factors, which affect ash content and specification is deduced.

综合考虑各种因素对灰分和灰比的影响，建立了循环流化床锅炉机械未完全燃烧热损失的数学模型。

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With the application of QC method, combined with the mathematical statistical analysis, The main factors that affect the gas hole are found.

运用QC（质量管理）方法，并结合统计分析，查找出了影响气孔的主要因素。

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