英语词汇“block system”是什么意思，“block system”的读音、用法及例句翻译-烛光网

词汇	block system
释义	block systemn.（名词） A system for controlling and safeguarding the flow of railway trains in which track is divided into blocks, each controlled by automatic signals.闭塞系统：用于控制和保障火车安全行驶的系统，它每一路段的轨道上都由自动信号控制
随便看	elem. element element element 104 element 105 element 110 element 111 element 112 elemental elementals elementary elementary particle elementary school elemented elementing elements elemi elemis elephant elephant elephant folio elephantiases elephantiasis elephantine Elephantine

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