“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	permanent exhibition Permanent Exhibition at Northeast Museum permanent exhibition hall permanent ferrites permanent filling materials and concerned materials permanent grazing land permanenthigh-intensity magnetic drum separator permanenthigh-intensity magnetic roll-beltseparator Permanent International Association of Navigation Congress permanent international migration Permanent Inter-state Committee on Draught Control in the Sahel, CILSS permanently convergent series permanent magnet permanent magnet asynchronous genertor permanent-magnet direct current motor permanent magnet electric machine permanent magnet focusing permanent magnetic coupler permanent magnetic drum separator permanent magnetic material permanent magnetic materials permanent magnetic vertical separator permanent magnetism permanent magnet linear synchronous motor permanent magnet starting generator

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。