To introduce a newly automatic system of switch and broadcast the broadcast channel system of teletext .
介绍基于自动切换播出的正程电视图文信息频道播出系统。
To introduce a newly automatic system of switch and broadcast the broadcast channel system of teletext.
介绍基于自动切换播出的正程电视图文信息频道播出系统。
To introduce a newly automatic system of switch and broadcast the broadcast channel system of teletext.
介绍基于自动切换播出的正程电视图文信息频道播出系统。
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