“historical instruments”的概念、定义、翻译、参考文献-科学参考

单词	historical instruments
释义	historical instruments Encyclopedia 管理学历史文书释 historical instruments历史文书中国历史上，上古至清末（1911）各历史时期使用的文书。
随便看	unqualified opinion with emphasis of matter paragraph unquantized unramified unramified algebra unramified character unramified covering unramified covering space unramified covering surface unramified element unramified extension unramified field unramified field extension unramified function unramified ideal unramified local domain unramified local ring unramified manifold unramified morphism unramifiedness unramified prime ideal unramified regular element unramified Riemann domain unramified ring unramified ring extension unramified semilocal ring

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。