“permissive block system”的概念、定义、翻译、参考文献-科学参考

单词	permissive block system
释义	permissive block system [pǝr¦mis·iv `bläk ´sis·tǝm] ^{CIVIL ENGINEERING} A block system in which a railroad train is permitted to enter a block section already occupied by a train.
随便看	gene overlap gene penetrance gene pool general address general anesthesia general anesthetic general arrangement plans general aviation general broadcast general chart general circulation general depot general formula general integral generalized binomial trials model generalized coordinates generalized force generalized function generalized hydrostatic equation generalized mean-value theorem generalized momentum generalized Poincaré conjecture generalized power generalized routine generalized system

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