Nonreturntozero recording in which there is a change in the condition of magnetization in the center of a cell containing a one, and a change in the boundary between two cells each of which contains a zero.; 一种不归零制(磁)记录技术,其中存在如下的极化状态的变化:某个存储单元的中心发生 磁化状态的改变,则表示为1;两个相邻单元之间边界上发生磁化状态的改变,则表示为0。