nu.cle.us
n.(名词)
【复数】 nu.cle.i[-klô-o.] 或 nu.cle.us.es
A central or essential part around which other parts are gathered or grouped; a core:
核,核心,中心:中心或根本的部分,其他部分被聚集或组合到它的周围;核心:
例句:
the nucleus of a city.
市中心
Something regarded as a basis for future development and growth; a kernel:
起点,开始:被作为进一步发展或生长的基础的事物;核心:
例句:
a few paintings that formed the nucleus of a great art collection.
一个大型艺术收藏的最初的几张画
Biology A large, membrane-bound, usually spherical protoplasmic structure within a living cell, containing the cell`s hereditary material and controlling its metabolism, growth, and reproduction.
【生物学】 细胞核:活细胞之内大的、有膜的、常为球形的细胞质结构,含有细胞遗传物质并控制其新陈代谢、生长和繁殖
Botany
【植物学】
The central kernel of a nut or seed.
籽仁:坚果或种子中心的仁
The center of a starch granule.
淀粉颗粒的中心
Anatomy A group of specialized nerve cells or a localized mass of gray matter in the brain or spinal cord.
【解剖学】 神经核:一组专门的神经细胞或存在于大脑或脊髓中灰物质的局部块
Physics The positively charged central region of an atom, composed of protons and neutrons and containing almost all of the mass of the atom.
【物理学】 原子核:原子的正极中心部分,由质子和中子构成,几乎集中了原子的全部质量
Chemistry A group of atoms bound in a structure, such as a benzene ring, that is resistant to alteration in chemical reactions.
【化学】 环(晶)核:包围在抗化学反应变化的结构中的一组原子,如苯环
Astronomy
【天文学】
The central portion of the head of a comet.
彗核:彗星头部的中心部分
The central or brightest part of a nebula or galaxy.
核:星云或银河的中心或最亮部分
Meteorology A particle on which water vapor molecules accumulate in free air to form a droplet or ice crystal.
【气象学】 凝结核:水汽分子在其上积聚并在自由空气中形成小滴或冰晶的粒子
来源:
Latin nuculeus, nucleus [kernel]
拉丁语 nuculeus, nucleus [核,核心]
from nucula [little nut]
源自 nucula [小核心]
diminutive of nux nuc- [nut]
nux的小后缀 nuc- [核心]