“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	Practical Modern Chinese Grammar practical number practical optics Practical Propaganda Practical Public Relations practical rationality practical reason practical reasoning Practical Rock Engineering Technology practical significance of performance Practical Studies practical superconductive materials practical superconductor practical-superconductor practical swimming practical system of units practical talents in rural areas practical theology practical training of public security command practical training venue practice practice basic postures practice course of teacher education practice field practice for food production and management

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