The procedures can realize economical life assessment of transformer in-service, renew decision, economic operation way analyze and operating characteristic analysis, and so on;
在功能方面，系统可实现在役变压器经济寿命评估、更新决策、经济运行方式分析以及运行特性分析等各种功能；
The diagnostic performance was estimated by relative operating characteristic (ROC) analysis.
试验的诊断性能用相对操作特征(ROC)分析法估测之。
The mathematical model of stepper motors maximum operating frequency is established based on the analysis of stepper motors torque-frequency characteristic and systemic motion equation.
通过对步进电动机矩频特性及其运动方程序的分析，建立了步进电动机最高运行频率的数学模型，即最高运行频率为最大静转矩和负载转矩的函数。
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