基本解释自动闭塞信号机英汉例句双语例句Railway automatic blocking and continuous transmission lines (RABCL) supply power for the railway automatic blocking signal and the loads along the lines, etc.自动闭塞和电力贯通线路为铁路沿线自动闭塞信号及车站负荷等提供电源。automatic block signal更多例句词组短语短语signal automatic blocking 信号自动闭塞automatic block signal更多词组