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。
The magnetic nano-composite particle has a typical core-shell structure.
磁性纳米复合粒子具有典型的核壳结构。
The magnetic nano-composite particle has a typical core-shell structure.
磁性纳米复合粒子具有典型的核壳结构。
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