A method of representing data in magnetizable surface storage; for example,"modified frequency modulation".

在磁表面存储技术中一种表示数据法，例改频制。

A defect in the magnetizable surface coating (for example,on magnetic disc) consisting of a raised or thick area.

在磁性表层上(磁盘上)缺陷,包括隆起区域或厚区域。