“semi-automatic block”的概念、定义、翻译、参考文献-科学参考

单词	semi-automatic block
释义	semi-automatic block Encyclopedia 工学铁路区间闭塞释 semi-automatic block半自动闭塞人工确认相邻两铁路车站间区间线路空闲、办理和解除闭塞，自动开放、关闭出发信号机的闭塞方式。
随便看	Xu Dixin Xu E Xue and Ma contending to reform Cantonese opera Xue Angfu Xue Bɑochɑi Xuecheng Qu Xuecheng Site Xue Daoguang Xue Daoheng Xue Dianjie Xuedou Shan Xueduo yak Xue Enhou Xue'eryou Book House Xue Feng Xuefeng Shan Xue Fengzuo Xue Fucheng Xue Fucheng's Garden xuefu zhuyu decoction Xueguanbu Cemetery xuehai Xuehai Academy Xue Hong Lei Shi Xue Hui

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