工作特性曲线 meaning in Chinese

operating characteristic curve
performance curve

The hardware is executing part , and it take charge of controlling , judging . this paper presents the whole testing item of the testing system . the industrial computer can draw the curve automatically by using matlab , and we can get the whole result report forms in the end
论文详细的分析和论述了三相异步电动机各个试验项目的自动测试，在所研制的测试系统中，可以根据试验的结果用matlab进行曲线拟合，最后得到三相异步电动机的工作特性曲线和型式试验的结果报表。