名词
中文翻译：磁心
同义词：
['magnetic core', 'magnetic center']
例句：
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1. The magnetized iron rod is attracted to the north pole.
被磁化的铁棒被吸引到北极。
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2. The scientist used a magnet to attract the metal ball.
科学家用磁铁吸引了金属球。
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3. The magnetized material can be used in many applications, such as in data storage and transportation.
磁化材料可以应用于许多领域，如数据存储和运输。