“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	tropical medicine tropical meteorology tropical monsoon tropical monsoon climate tropical month Tropical Needleleaf Forest tropical niche conservatism hypothesis tropical ocean-atmosphere interaction Tropical Ocean Global Atmosphere tropical pipe Tropical Rainfall Measuring Mission tropical rain forest tropical rainforest tropical revolution tropical savanna tropical savanna climate Tropical Seashore of Sanya Scenic and Historic Area tropical shrubby tussock tropical shrub grassland tropical storm surge disaster tropical storm surge disasters in China tropical suiting tropical trade wind tropical tropopause （transition） layer tropical tussock

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