On-line testing shows that, this digital ultrasonic peening power supply based on DSP can make the system work at the resonance state, and the peening process is stable.
联机试验表明，本文研制的基于DSP的数字化超声冲击电源可以使系统工作在谐振状态，冲击过程稳定。
The ultrasonic testing experiments for oil pipeline flaw show that it has high identification accuracy, fine generation and easy implement on-line.
通过超声石油管线缺陷大量检测实验表明：该方法具有准确率高、推广性强、容易在线实施等优点。
This article points out that using the portable ultrasonic flowmeter can realize the large-caliber flowmeters on-line testing and calibration.
文章指出采用便携式超声波流量计可以实现在线大口径流量计的检测及校准，并介绍了检测步骤和检测时需要满足的条件。
Effect of "square line" structure of titanium alloys on ultrasonic testing is analysed by the principle of sound scattering.
应用声散射原理描述了钛合金中方形轮廓线低倍组织对超声波探伤的影响。
Effect of "square line" structure of titanium alloys on ultrasonic testing is analysed by the principle of sound scattering.
应用声散射原理描述了钛合金中方形轮廓线低倍组织对超声波探伤的影响。
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