本文对北京牌8306型彩色电视机的开关电源进行了详细分析，并给出了电路设计方法。

The switched power supply circuit in color TV set, Beijing brand model 8306, are analysed in detail, and a design method of the circuit are given in this paper.

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我要乘坐去北京的514号航班。信息牌显示航班延误。

I'm here for flight 514 returning to Beijing but the board shows there is a delay.

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北京南站主管站长许盛刚说：“从五月中旬开始，我们开始通过广告牌，广播和液晶屏幕发布这项政策。

Xu Shenggang, Chief of Beijing South Railway Station said "Starting from mid May, we began to announce the policy through billboards, broadcasts, and LCD screens.

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