我国钢轨的探伤主要采用超声波检测方法，设备主要有大型探伤车和小型探伤仪。
In our country, we mainly use ultrasonic detecting method, the mainly equipments are the big detector train and the rail detector.
随着数字技术的进步，新型数字式钢轨超声探伤仪将成为我国铁路钢轨检测的主要手段。
Thanks to the rapid development of digital technology, novel digital ultrasonic detector is becoming the main method of rail test.
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