...敏感性分析、蒙特卡洛模拟法（Monte Carlo method）、模糊分析法、外推法（Extrapolation）、影响图分析法（Influence Diagram）、层次分析法（AHP）、灰色系统理论（Grey System Theory）、效用理论（Utility Theory）、主观概率法（SubjectiveProbability M...
Therefore, we use theFishboneDiagram, arranging all the factorsaffectingthecoilqualityand examining the factors one by one and finally found out the main factors.