日本列车局域网王令朝译在铁路列车内，各种用途的信息，历来是通过各自专用的直通线路来传递的。但是，在列车上铺设大量专用线路不仅会导致列车重量的增加，而且还缺乏扩展性。因此，目前日本正在逐步尝试使用光纤来代替它们，也就是对列车内以监控传输线路为核心的光纤... The Japanese train LAN Wang Ling Zhao translation in the railway train, a variety of uses of information, has always been through their dedicated direct transmission lines to pass. However, laying a large number of dedicated lanes on trains will not only result in an increase in train weight, but also lack scalability. Therefore, at present, Japan is gradually trying to use optical fiber to replace them, that is, to monitor the transmission line in the train as the core optical fiber ...