The drum was rotated continuously, and positioned along its length were dozens of read and write heads.

鼓不断旋转，沿着它的长度放置了数十个读写头。

Inside is a write head, which passes current through a wound wire to generate a magnetic field, causing a small section of the tape to become magnetized.

里面是一个写入磁头，电流通过缠绕的电线产生磁场，使磁带的一小部分被磁化。

" Maester Pylos can read for you. As to writing, my last Hand wrote the head off his shoulders. All I ask of you are the things you've always given me. Honesty. Loyalty. Service" .

" 派洛斯学士可以替你读。至于写，我的前任首相把脑袋都给写掉了。我要的不过是你一直都给予我的东西：诚实、忠心和效劳。"