时差N小时:录像机如何记录(上)
日期:2015-01-21 15:08

(单词翻译:单击)

@~coESAg3qz!w-PQT^Odl^+N6katj1~7H^~~

Although audio tapes and video tapes look different, they're based on the same principles.
尽管磁带和录像带看起来不同,但二者都基于同样的原理N=QhMFa4QjV;y85GX]U-
Each has a roll of magnetic material which slides past the so-called “playback head” in the VCR or cassette deck (cassette decks have one playback head, VCRs have two or more).
录像机或盒式录音机(盒式录音机有一个放音磁头,录象机有两个或更多)都有能够滑过被称为“放音磁头”的磁性材料qxY4M1U,ql2

SAS~Ca^uAGLXjmOrdG3f

XaF&6eLry52o;&5r|q2C


In both machines, these heads detect changes in magnetism as the tape moves by.
这两种机器的磁头都会随着本身媒体的运动检测磁性的变化&WsyE9a_qv
The changing magnetic signal is translated into music on your tape deck, or both video and sound on your VCR.
磁信号的改变转化为你录音机中的音乐,或录像机的视频和声音[x_)-BK9H-=
Without a changing magnetic signal over a playback head, you'd get no sound, no picture.
如果放音磁头没有磁信号的变化,你就得不到声音和图像45##-xcpv4qrh39dlwx

1jT5)aor#tpQHBWPo]avfkuAvaVIORzy8&@Uwxfpj9zTZ
分享到
重点单词
  • magneticadj. 有磁性的,有吸引力的,催眠术的
  • signaln. 信号,标志 v. (发信号)通知、表示 adj.
  • magnetismn. 磁性,吸引力,磁学