“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	metallographer metallographic metallographic microscope metallographic technique metallography metalloid metallo ligand metallometer metallo-metric metallomics metallo-optics metallophilic interaction metallophthalocyanine metalloporphyrin metalloporphyrin complex metalloprotease metalloprotease; metalloproteinase metalloprotein metalloproteinase metalloproteomics analysis for geochemical sample metallorganics metalloscope metallothermic reduction metallothermics metallothionein

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。