转子上装有宽极弧圆环结构的永磁体，永磁体用非磁性的薄壁外圈固定。

A permanent magnet with a wide pole arc circular ring structure is arranged on the rotor and fixed with a non-magnetic thin-wall outer ring.

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有些人意识到，他们可以使用新材料的工具，以测试他们对磁化过程的理解，因为他们可以精确地控制磁性和非磁性两种金属原子层。

Some realized they could use the new materials tools to test their understanding of the magnetizing process, because they could precisely control layers of both magnetic and nonmagnetic metal atoms.

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为了理解这三种想法是如何联系到一起的，可以先设想一个由非磁性材料制造的孤立的纳米微粒，其直径为光波波长的若干分之一。

To understand how these three ideas work together, it helps first to think about a lone nanoparticle made of some nonmagnetic material, its diameter a small fraction of an optical wavelength.

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