“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	prolonged pregnancy proluvium fan prolylhydroxylase domaincontaining protein prolymphoblast prolymphocytic leukemia PROM promegakaryoblast promelittin promeristem Promethei Terra Prometheus Prometheus Bound Prometheus Unbound promethium promethium-147 prometryn promic number prominence prominence eyepiece prominence flare prominence knot prominence phenomenology prominence spectrometer prominence spectroscope prominence streamer

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