“feudal hierarchy”的概念、定义、翻译、参考文献-科学参考

单词	feudal hierarchy
释义	feudal hierarchy Encyclopedia 历史学〔综述〕释 feudal hierarchy封建等级制度西欧封建主之间依据土地占有和人身依附关系而形成的一种等级关系。
随便看	air-to-air heat exchanger air-to-air missile air-to-air missile flight phase air-to-air missile warhead air to fuel ratio air to ground missile Air to ship missile air toxics air track air traffic control Air Traffic Control Building air traffic controlfacilities air traffic control radar air traffic control safety management system air traffic control service air traffic control system Air Traffic Control Tower air traffic flow management air traffic management air traffic management center air traffic management facility air traffic service air traffic statistics air transport air transportation

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。