物质核心是磁性铁镍合金复合材料的结晶，其核心不是中空的。
The physical core is crystallized in magnetic iron-nickel alloy-composite. The core is not hollow.
grunberg的团队创造了由两片几个原子厚的磁性铁，之间隔着一层无磁性的铬层的三明治。
Grunberg's team created a sandwich of two several-atom-thick layers of magnetic iron separated by a layer of nonmagnetic chromium between them.
介绍磁性材料生产中原材料铁鳞的库存管理控制方法。
The stock management of the raw material, iron scale, in magnetic materials production is described.
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