请输入您要查询的字词:
单词
cephalochordate
释义
cephalochordate
Encyclopedia
理学
头索动物
释
cephalochordate
头索动物
现存最原始的脊索动物,位于脊索动物系统树基部。头索动物无真正的头,习惯也称无头类,脊索纵贯全身,向前一直延伸到身体背神经管的前方,这在所有脊索动物是仅有的现象,故而被称为头索动物。
Biology
cephalochordate
头索动物
随便看
normal singularity
normal skin effect
normal solubility
normal solution
normal solvability
normal space
normal space to a surface
normal space with a measure
normal specific acoustic impedance
normal spectrum
normal sphere bundle
normal spherical mapping
normal spiral galaxy
normal star
normal state
normal statistic
normal stellar wind
normal stochastic process
normal storage level
normal strain
normal stress
normal structure
normal student
normal subgroup
normal subgroup series
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:2026/1/27 11:44:01