magnetic head

magnetic-head的词性：
n.（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