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半自动闭塞
释义
半自动闭塞
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。
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Special Treatment
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