The mechanical device that moves something , usually read/write head.

一种机械装置，用于移动诸如读写磁头之类的部件。

So, despite not really knowing how to play the piano and not knowing how to read or write music, Cicoria got himself a piano and promptly began to play everything he heard in his head.

于是，尽管实际上不知道该如何弹钢琴，也不知道如何读写乐谱，西科里拉还是给自己买了一台钢琴，并且立即开始弹奏脑子里听到的一切。

The preamp has much more tracks going to the heads (right side) than to the HDA (left side), it's because HDD can work only with one "head" (pair of read an write elements) at a time.

前置有更多的轨道去头（右侧），而不是在HDA（左侧），这是因为硬盘只能有一个工作的“头”（读一写的一次元素）对。

Now, if the current is sent one way through the read/write head the area is polarized in one direction.

如果当前通过读写头来发送指向一个方向的信息,这个区域的磁极指向某个方向。

计算机科学课程节选 : 哈佛公开课

So as the particles on the disk that get the current in the read/write head moving put together millions of these magnetized segments and you've got a file.

通过读写头你就可以得到每个粒子的极性,如果把这些上百万粒子的信息,汇聚要一起就够成了一个文件。

计算机科学课程节选 : 哈佛公开课

When a brief pulse of electricity is sent to the read/write head it flips on a tiny electromagnet for a fraction of a second.

当一个简单的电脉冲被送到读写头,它会短时间内出现一个小的电磁。

计算机科学课程节选 : 哈佛公开课