Dimmers system apply to thread, stadium, TV station studio, concert, LED broadcast board and so on.

调光系统广泛应用于剧场、体育馆、电视台演播厅、音乐会、大型LED广告牌等场所。

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Those more assertive efforts eventually led to the AMBER alert system, which broadcasts news about missing children on TV, radio, the Internet, mobile phones, lottery tickets and highway signs.

CNN: Missing child case 'awakened America'