To understand the change of the magnetic properties and mechanical properties of magnets after the subzero treatment, and the effect of sintered Nd-Fe-B magnet with the cryogenic treatment.
以了解其深冷处理后磁性能和力学性能的变化，以及深冷处理对烧结钕铁硼的作用机理。
To understand the change of the magnetic properties and mechanical properties of magnets after the subzero treatment, and the effect of sintered Nd-Fe-B magnet with the cryogenic treatment.
以了解其深冷处理后磁性能和力学性能的变化，以及深冷处理对烧结钕铁硼的作用机理。
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