The replacing of mechanic scan with electricscanning one line probes controlled by a computer to realize flaw detection of twin train wheels is introduced.
描述了由计算机控制探头阵列电扫描对列车轮对探伤工作模式，以取代机械扫描方式。
2
The conventional mechanical scanning radar is gradually replaced by powerful electricscanning phased array radar in the application as an airborne radar due to its limited scanning speed.
Methods: the morphology of the resin tags in different groups were analysed with the scanningelectric microscope and computer image-processing technique qualitatively and quantitatively.