In this article we present the elementary conception of the teletext system and it's basic working principle.

本文主要介绍了图文电视系统的基本概念及其工作原理。

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In this article we present the elementary conception of the teletext system and it's basic working principle.

本文主要介绍了图文电视系统的基本概念及其工作原理。

youdao