采用交流磁场检测法对钻具螺纹进行了探伤。
A new Nondestructive testing method, alternative current magnetic flux leakage testing, was introduced to inspect the flaw in the drilling tool thread area.
空间磁场检测是磁场空间定位技术中的重要组成部分。
The magnetic field detection is an important part of magneticfield-based position method.
文中研究了油管局部缺陷和壁厚减薄缺陷的漏磁场检测原理。
Based on the magnetic leakage flux technique, the principle of localized defect inspection and wall thickness measurement in oil well tubing has been researched.
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