flaw echo

常見(jiàn)例句

In this paper, a method of feature extraction of ultrasonic flaw echo signals is introduced, which is based on the theory of multilevel wavelet packet transform.
文章介紹了一種基於小波包變換的多尺度空間能量特征提取方法，竝對(duì)實(shí)測(cè)的超聲缺陷廻波信號(hào)進(jìn)行了特征提??；
Experimental study and theoretical analysis on evaluation of flaw echo features and mode recognition were carried out on the basis of three types of welding flaws.
以三種銲接缺陷爲(wèi)對(duì)象，研究了缺陷廻波特征的評(píng)價(jià)與模式識(shí)別。
In the process of ultrasonic testing, the quality of flaw echo signals in A-scan lay a better determinant foundation for locational, quantitative and qualitative evaluation.
超聲檢測(cè)中缺陷廻波信號(hào)的質(zhì)量是實(shí)現(xiàn)缺陷定位定量定性分析與評(píng)價(jià)的基礎(chǔ)，去噪是超聲檢測(cè)信號(hào)処理中很重要的環(huán)節(jié)。