在重放多信道录象带时或直接显示时，利用自动识别并选择任一信道的发象信号。

The image signals in any channel are automatically identified and selected by the id.

youdao

在重放多信道录象带时或直接显示时，利用自动识别并选择任一信道的发象信号。

The image signals in any channel are automatically identified and selected by the id.

youdao