• Digital TV techniques have already entered practical stage. Applications of HighDefinition TV (HDTV) and Standard Definition TV (SDTV) will existent together fora long time.

    数字电视进入实用化阶段,不同等级数字电视业务(如hdtvSDTV)长期共存

    youdao

  • Digital TV techniques have already entered practical stage. Applications of HighDefinition TV (HDTV) and Standard Definition TV (SDTV) will existent together fora long time.

    数字电视进入实用化阶段,不同等级数字电视业务(如hdtvSDTV)长期共存

    youdao

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进来说说原因吧 确定