“封土制”的概念、定义、翻译、参考文献-科学参考

单词	封土制
释义	封土制 Encyclopedia 经济学封土制释 system of feudum封土制封君向封臣封赐土地，以换取封臣的军事和经济义务的经济形式。
随便看	double tangent double-tangential knot doublet antenna double taxation double taxation conventions double-taxed household doubleteeth pubescent angelica root double tensor doublet flow doublet function double thread polymer double-time Green function double-time Green's function doublet lens doublet objective double torus double-track grain prices system double tracks sign double track system for electronic records and paper records double trailer combination vehicle double transformation double-transistor random-access memory double transit double transitive group double triangle lattice

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。