Ultrasonic waves produce pulsedsignals, by means of which various defects in metal can be detected.
超声波能产生脉冲信号,用以检测金属中各种缺陷。
2
The invention can be embodied in a pulsed radar, for which each set of signals comprises a set of pulsedsignals and each pulsed signal is repeated at a selected repetition rate.
本发明可具体实施为脉冲雷达,其每组信号包括一组脉冲信号且每个脉冲信号以选定重复速率重复。
3
The plasma cloud charge sensor was applied to detect the status of keyhole molten pool during pulsed plasma arc welding, furthermore, the detected signals were studied.