“二里头文化玉牙璋”的概念、定义、翻译、参考文献-科学参考

单词	二里头文化玉牙璋
释义	二里头文化玉牙璋 Encyclopedia 历史学代表性器物释 jade toothed trilobate Zhang二里头文化玉牙璋中国夏商时期二里头文化玉器。
随便看	summation by bracketing summation by parts summation check summation convention summation formula summation index summation limit summation method summation method of arithmetical averages -summation method 「C, summation notation summation of contraction summation of divergent series summation of Fourier series summation of pinning force summation of sequence summation of series summation rule summation sign summative evaluation summator summatory function summer summer and winter sports camp summer assizes

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。