“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	plant growth substance plant habitat microbes plant-herbivore interaction Plant Holly planthoppers plant hormones plant immune activator planting planting and breeding in paddy planting arrangement of fruit trees planting density planting engineering of landscape architecture planting in rows planting machinery planting non-point source pollution planting production statistics planting season planting soil planting spacing planting system planting technique Planting the Millet planting zoning plant innate immunity plant in Tang poetry

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