首页> 外文期刊>Telegraph-Engineers and Electricians, Journal of the Society of >The working of railway signals and points by electro-magnets, and controlling them, in conjunction with a complete block system, efficiently and economically by a current from a primary or secondary battery
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The working of railway signals and points by electro-magnets, and controlling them, in conjunction with a complete block system, efficiently and economically by a current from a primary or secondary battery

机译:通过电磁体对铁路信号和点进行处理,并与一个完整的块系统配合使用,通过一次或二次电池产生的电流有效而经济地进行控制

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