“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	prochloraz procine circovirus,PCV Procion procladium Proclamation of Amnesty Proclamation of Amnesty and Reconstruction Proclamation of Central America Independence Proclamation of Emancipation of Negro Slaves Proclamation of Neutrality Proclamation of Philippine Independence Proclamations Drafting Office proclamatory price of land Proclus Proclus (410—485) Proclus axiom procoagulant drugs procollagen procolophonids pro column derivatization pro-column derivatization proconstructible set Procopius procrastination procreation Proctor crater

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