谁给翻译: ultrasonic examination？ ultrasonic examination may replace radiograohy in accordance with asme b31.3 ,para.341.41. if ultrasonic examination is applied,automated computer enhanced data accquisition is required to abtain a permanent record of the weld to demonstrate the sbsence , or not,of liner type discontinuities with amplitudes exceeding the reference level correct ones: radiography acquisition obtain absence linear 楼主看来是打字的吧，严谨一点比较好，尤其是要做探伤检测之类的工作的话。美国人就是这问题导致多艘军舰核潜艇存在隐患啊。查看更多
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