口述记录设备上的一种装置，当到达记录媒体末端时发出一个声响信号或可视信号。

On dictation equipment, a device that gives an audible or visual signal at the end of the recording medium.

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口述记录设备上的一种装置，当到达记录媒体末端时发出一个声响信号或可视信号。

On dictation equipment, a device that gives an audible or visual signal at the end of the recording medium.

youdao