“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	Development and Sects of Ci Poetry in the Tang and Song Dynasties development and utilization of forest resources development and utilization of submarine mineral resources development and utilization of underground space development and utilization plan of mineral resources development axis development base of mineral resources development blasting development bonus development by ramp development by slope development center development communication theory development control development degree of environmental geological problems development economics development education development ethic development ethics development examination development finance development financing development game development history of agricultural economics and management disciplinary development history of agricultural environmental protection

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。