write head

基本解释

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。
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。
The output device might be a hard disk, for instance, and writing to the hard disk involved moving the write head around and waiting for the platter to spin to the right place.
输出设备可能是硬盘，例如，和写作涉及的硬盘将写头，等待盘片旋转到正确的地方。

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。
哈佛公开课 - 计算机科学课程节选
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。
哈佛公开课 - 计算机科学课程节选
Let's try to do part of it in the head, so I can just write down the answer.
让我们先试试前面的一部分,我就直接写答案了
耶鲁公开课 - 基础物理课程节选

But I will try Ambien and Melatonin at some point (though not together) to write a head-to-head comparison.
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