BS EN 50129:2018 BS EN 50129 :2018 Incorporating corrigendum April 2019 纳入 2019 年 4 月的更正 BSI Standards Publication BSI 标准出版物 Railway applications – Communication, signalling and processing systems –Safetyrelated electronic systems for signalling 铁路应用 – 通信、信号和处理系统 – 用于信...