playback

名词 playback:

1. the act of reproducing recorded sound
2. electronic equipment comprising the part of a tape recorder that reproduces the recorded material

1. In word processing, an editing feature in which the system automatically adjusts the right hand margin for insertion or deletion of copy during playback. Word and sometimes page wraparound is automatically performed as needed.
   字(词)处理技术中的一种编辑特性，在此特性下，系统在副本中插入或删除后，右边自动对齐。在需要时，系统自动完成卷字和卷页。
2. A relatively wide magnetic tape used to record visual images and associated sound for subsequent playback or broadcasting.
   录像磁带一种比较宽的磁带，用来记录图像和对应的声音以进行复放或者播放
3. A relatively narrow magnetic tape used to record sound for subsequent playback.
   录音磁带一种相对狭长的磁带，用于录下声音以便日后重放
4. On dictation equipment, a device for accurate alignment of playback head, or combined head, to the track on the recording medium.
   录音设备上的一种装置，它能精确地把重放磁头或组合磁头调准到记录介质的磁道上。

play.back

n.（名词）
The act or process of replaying a newly made record or tape.
重放：重放新录制的唱片或磁带的行为或过程
A method of or an apparatus for reproducing sound recordings:
重放录音的方法或设备：
例句：
.switches on the playback of a telephone-answering machine.(Vanity Fair)
.电话回答装置的重放键.(名利场)