The average value of separability measure is as high as 91.7%, which indicates that this method is quite effective in the feature extraction of ultrasonic flaw echoes.

• 结果表明：该方法提取的缺陷回波信号特征值，其可分性测度均值达91.；7%25，从而证明该方法对超声检测缺陷回波信号的特征提取是相当有效的。