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单词 magnetic head
释义 magnetic headn.(名词)
  1. An electromagnet, such as one used in a tape recorder, that converts electrical impulses into variations in the magnetism of a surface for storage and subsequent retrieval.磁头:一种电磁体,例如用在磁带录音机上的那种,能减弱电脉冲强度以备贮存在磁性表面上并能回收失去的电脉冲
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