“The defense of Beijing”的概念、定义、翻译、参考文献-科学参考

单词	The defense of Beijing
释义	The defense of Beijing Encyclopedia 历史学政治史释 The defense of Beijing北京保卫战中国明代正统十四年（1449）蒙古瓦剌部骑兵在首领也先率领下攻打明朝首都北京，明朝军民在明景帝领导、于谦主持下开展的一场首都保卫战。
随便看	queueing systems queueing system with autonomous service queueing system with bounded queues queueing system with many servers queueing system with multi-channel queueing system with one channel queueing system with refusals queueing system with waiting queueing theory queueing time queue input stream queue length queue process queue size queue with priorities queue with refusals queue with waiting and multi-channel queue with waiting and one channel queuing queuing delay queuing model queuing theory queuing theory model Quevedo Queyu language

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