By single chip computer control of counter automatically generate tong 1 second stop 4 seconds of signal, make no. 5 relay output drive electric horn turns electrify.

由单片计算机控制的计数器自动产生通1秒停4秒的信号，使5路继电器输出带动电喇叭轮流通电。

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Electrical products which have LCD time counter, Layer sensor, Three-phase AC fault protection relay and so on.

其中电器类产品有液晶显示计时计数器、平层感应器、断相错相三相交流保护继电器等等。

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The units, dubbed "Churchill's Secret Army", were set up to relay vital information about enemy movements and help mount counter-attacks as Britain braced itself for occupation.

BBC: Secret wartime bunker near Cardiff opened to public

With the increase in drugs being released over the counter, and the growth of Internet pharmacies where you relay your symptoms over the Internet, more and more people are becoming DIYDs and simply buying what they think they need at the pharmacy.

WSJ: On the Web, Amateurs Rivaling Professionals