The foundation of automatic block and cab signal is track circuit.
自动闭塞和机车信号的基础是轨道电路。
It is a special power supply equipment designed recently for ut track circuit without insulation.
该电源屏是我厂最新研制的为ut无绝缘轨道电路提供电源的专用区间供电设备。
It was on the National Circuit at Silverstone and the track was damp.
那是在银石的国家赛车场，赛道很潮湿。
It was on the National Circuit at Silverstone and the track was damp.
那是在银石的国家赛车场，赛道很潮湿。
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