对于商人来说,时间就是金钱。对于军人来说,时间则是胜败,时间决定生死。从机械到卫星现在我们很多人,已经逐渐淡忘了手表,特别是机械手表,改用手机等各种新型电子器件来掌握时间。但是你可能也早已发现,手机上提供的时钟并不精准,很多在运行数月后,都会出现误差,有时甚至高达数分钟。还有电视台、机顶盒提供的时钟,看起来似乎是北京标准时间,但对比过中央台、地方台和广播电台的报时后,你会发现,电视屏幕上显示的时钟也存在 For businessmen, time is money. For soldiers, the time is victory or defeat, time is decided by life and death. From machinery to satellite Now that many of us have gradually forgotten the timepieces, especially the mechanical watches, the new types of electronic devices such as mobile phones. But you may have also noticed that the clocks provided on the handsets are not accurate enough, many of them will be in error after a few months of operation, sometimes up to a few minutes. There are also television and set-top box clocks that appear to be Beijing standard time, but after comparing the clocks of CCTV, local stations and radio stations, you will find that the clock displayed on the TV screen also exists