无线电时钟
- 网络Radio clock
无线电时钟-
我们介绍了无线电控制的时钟在1991年美国市场，并继续在这一技术在美国尖端。
We introduced radio-controlled clocks to the US market in1991 and continue to be on the cutting edge of this technology in America .
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为了防止干扰，设备应远离无线电波电器至少2米，如电视，收音机及无线电控制的时钟。
To prevent interference , the appliance should be kept away from radio waves electrical appliances at least2m , such as TVs , radios and radio-controlled clocks .
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这种做法起源于上世纪20年代。当时，美国东部和中部时区接收同步的实况无线电广播，从时钟上看，中部时区的广播要早一个小时。
This practice originated in the 1920s , when the Eastern and Central time zones received simultaneous live radio broadcasts , the Central time zone broadcast being an hour earlier on the clock .