By changing the film size can change the ferromagnetic resonance frequency and eddy current loss, and achieve the maximal attenuation to the noise with specific frequency.
通过改变薄膜尺寸可以改变薄膜的亚铁磁共振频率和涡流损耗，从而对特定频率的噪声衰减达到最佳效果。
2
It is key problem that the research of suppressing a probe-coil's lift-off noise for the curved specimen in practical eddy current testing.
研究弧面检测中探头提离干扰的抑制方法是涡流检测实践中一个重要课题。
3
This utility model has the advantages of simple structure, being capable of preventing clothes scrape, low noise, good filtering effect, preventing useless eddy current from producing.