During the production of shell bodies, surface defects were found by magnetic powder inspection.
炮弹弹体生产中，磁粉检测发现表层缺陷。
Decreasing the granularity of magnetic powder can increase the quality factor of magnetic powder core.
随着磁粉粒度的减小，磁粉芯品质因数增大。
Iron oxide powder is the main raw material for ferrite magnetic material.
氧化铁粉是铁氧体磁性材料的主要原料。
Iron oxide powder is the main raw material for ferrite magnetic material.
氧化铁粉是铁氧体磁性材料的主要原料。
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