“北京保卫战”的概念、定义、翻译、参考文献-科学参考

单词	北京保卫战
释义	北京保卫战 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	Fra Filippo Lippi Filippino Lippi fragile ecosystem fragile-fern family fragile ferns fragile structure fragile watermarking fragility fragility fractures fragment Fragmentary Black Lacquer Tray Inlaid with a Picture of the Moon Palace in Mother-of-pearl fragmentary book fragmentation fragmentation-blast warhead fragmentation-dispersion area fragmentation extension header fragmentation function fragmentation limit fragmentation of production fragmentation of social stratification fragmentation reaction fragmentation spore fragment based drug design fragment-based drug design fragment connection-based drug design fragment connection method

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。