英语词汇“block system”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	block system
释义	block system n. A system for controlling and safeguarding the flow of railway trains in which track is divided into blocks, each controlled by automatic signals.
随便看	Pen. penal penal code penalization penalize penally penalty penalty area penalty box penalty kick penalty kill penalty killer penalty killing penalty shot penalty spot penance Penang Penates pen-based pence pencel penchant pencil penciler pencil in

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