Remote field eddy current technique combined with computer technique and finite element analysis was used to examine the inservice ferromagnetic heat exchanger tubing.
远场涡流技术结合计算机技术和有限元分析方法，解决了在役铁磁性材料换热器管检验的问题。
A four frequency eddy current inspection instrument was developed based on theoretical analysis and simulative tests.
在理论分析和大量模拟试验基础上研制了四频涡流检测仪。
On the basis of the basic working principle of the eddy current sensor, the detailed analysis of the equivalent circuit is carried out.
在掌握电涡流传感器基本工作原理的基础上，对电涡流传感器的等效电路作了详尽分析。
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