“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	areal coordinate areal curl areal derivative areal element area leveling areal feature areal functional areal gradient area light source Areal Linguistics areal metric areal productivity areal types of animal husbandry Areal Typology areal velocity area-mass ratio area measurement area measuring area method area moment of inertia area monitoring area navigation area of audibility area of coverage area of horizon

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