请输入您要查询的字词:
单词
elephantiforms (fossil)
释义
elephantiforms (fossil)
Encyclopedia
理学
哺乳纲(化石)
释
elephantiforms (fossil)
象类(化石)
从现生物种来看,象类与长鼻目(Proboscidea)这两个概念是统一的,因为现生的长鼻目仅包含亚洲象和非洲象两属三种;然而考虑到种类繁多的长鼻目化石类群,如何定义象类就成为一个问题。这里采用P.塔西(P. Tassy)1988年基于分支系统学定义的象类(Elephantiformes,亚目一级),将恐象(Deinotherium)、莫湖兽(Moeritherium)、磷灰兽(Phosphatherium)、曙象(Eritherium)等类群排除在外。
随便看
extrabudgetary funds of township finance
extra cambium
extracellular
extracellular digestion
extracellular enzyme
extracellular fluid
extracellular matrix,ECM
extracellular polysaccharide of pathogen
extracellular products
extracellular recording
extracentral telescope
extrachromosomal inheritance
extra-close coupling
extra-code
extra column effect
extra-column effect
extra-column effects
extracorporeal circulation/cardiopulmonary bypass
extracorporeal membrane oxygenation
extracorporeal shock wave lithotripsy
extracosmical
extract
extractability of organic pollutants
extractable ammonia escape analyzer
Extractable Organic Matter Method
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:2025/12/14 22:48:54