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有关矽钢片检验工作中所用的埃波斯坦方圈样品的实效磁路长度的问题,国外直到近期仍有不少研究工作发表,不久前英国出版的一本专书颇有收集。我们这里提出的研究结果尚不见于文献。最常用的测量方法中的样品及线圈的安排如图。
There is still a lot of research published until now in the field of the actual magnetic circuit length of the Erstez square ring sample used in the inspection of silicon steel sheets. Not long ago, a collection of books published in the United Kingdom was quite collected. The results we have presented here are yet to be found in the literature. The most commonly used measurement method in the sample and coil arrangement as shown.