By varying the tape speed during playback, the time base can be extended or compressed.

在重放的过程中可以改变磁带的速度，以使时间基准拉长或缩短。

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The magnetic tape with speech prompt for testing tape speed deviation of audio recorder can play its role only by inserting it into audio recorder. It is used to repair and calibrate audio recorder.

一种磁带录音机带速反映磁带，用于检验录音机带速偏差，其特征在于它使用国家标准规定的空白录音带在其录音带的声轨上录制上每秒发出一次短促声响。

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The camcorder winds the tape back or forward at high speed.

便携式摄像机可以高速度倒带或快进。

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And the experimenter is back there with the speed knob and at random intervals he just speeds up the tape of their heart and then slows it down.

实验者回到实验室，带着录音设备,随机地,他加速了心跳的录音,然后又慢下来。

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Whats bringing customers Quantums way is not just the capacity but also the speed of its tape drives.

FORBES: Serendigity