请输入您要查询的字词:
单词
寒武纪大爆发
释义
寒武纪大爆发
Encyclopedia
理学
古生物学
释
Cambrian explosion
寒武纪大爆发
地球生命系统起源与演化早期发生的一次多样性爆发式增加事件。具体是指距今5.4亿~5.0亿年间,地球海洋生命系统中“突然”出现了门类众多的后生动物(包括无脊椎动物和脊椎动物)。
随便看
Authoritative Directorship
authority
authority analysis
authority control
authority file
Authority of Incumbent
authority record
authorization
authorization assertion
authorization decision
authorization model of emergency linkage
authorization to operate
authorized bookstore
Authorized Bronze Weights
authorized capital system
authorized field of doctoral degree
authorized field of master degree
authorized legislation
authorized management system for state-owned assets
authorized payment by financial departments
Authorized School Regulation
author profiling
authorship identification
authorship/speaker identification
author's original map
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。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/10/3 21:06:24