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以LL650级为例 ,应用数理统计方法 ,对所测钢材力学性能数据进行统计并分析其不稳定因素 ,及母材对性能的影响
Taking the LL650 class as an example, the statistical data of the mechanical properties of the steel materials to be measured are statistically analyzed and the instability factors are analyzed, and the effect of the parent metal on the performance is analyzed.