“palaeolithic age”的概念、定义、翻译、参考文献-科学参考

单词	palaeolithic age
释义	palaeolithic 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	convexity condition convexity constraint convexity downward convexity inequality convexity limit convexity modulus convexity problem convexity property convexity radius convexity theorem convexity upward convex kite convex lattice convex lens convex linear combination convexly convex manifold convex mapping convex metric convex metric space convex mirror convex neighborhood convex norm convex object convexo-concave

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。