“old stone age”的概念、定义、翻译、参考文献-科学参考

单词	old stone age
释义	old stone age Encyclopedia 理学第四纪古生态释 palaeolithic; palaeolithic age; old stone age旧石器时代从人类能制造并使用工具开始到距今约1万年前。在地质时代上涵盖上新世晚期（距今约330万年前以后）和整个更新世。
随便看	semi-metals metallurgy semi-metric semi-metrically connected manifold semi-metric connection semi-metric space semi-metric transfer semimicro analysis semimicro [analytical] balance semimicro analytical balance semimicro balance semiminorant semi-minor axis semiminor axis semiminor axis of ellipsoid semimixis semi-modularity semi-modular lattice semimodular lattice semi-module semi-monocoque semi-monotone norm semi monotonicity semi-monotonicity Semimonthly Periodical on Opera semi mounted plough

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。