英:[ˈnjuːkliəs]
美:[ˈnuːkliəs]
英:[ˈnjuːkliəs]
美:[ˈnuːkliəs]
nu·cle·us
nu kli s
复数:nuclei或nucleuses
词根:nucleus
n.nucleonics 核子学;原子核物理学
noun
the small bright body in the head of a comet
the small brighter and denser portion of a galaxy (see galaxy sense 1b)
a central point, group, or mass about which gathering, concentration, or accretion takes place: such as
a cellular organelle of eukaryotes that is essential to cell functions (such as reproduction and protein synthesis), is composed of nucleoplasm and a nucleoprotein-rich network from which chromosomes and nucleoli arise, and is enclosed in a definite membrane see cell illustration
a mass of gray matter or group of cell bodies of neurons in the central nervous system
a characteristic and stable complex of atoms or groups in a molecule (see molecule sense 1)especially: ring
the naphthalene nucleus
the positively charged central portion of an atom that comprises nearly all of the atomic mass and that consists of protons and usually neutrons
the peak of sonority in the utterance of a syllable
a basic or essential part : core
players who are the nucleus of the team
cell nucleus细胞核
nucleus pulposus髓核
atomic nucleusn. [化]原子核
crystal nucleus晶核
caudate nucleus[医]尾状核
paraventricular nucleus室旁核;脑室壁核
suprachiasmatic nucleus视交叉上核
lateral geniculate nucleus外侧膝状体核
raphe nucleus中缝核
amygdaloid nucleus杏仁核;扁桃状核;杏仁巢
arcuate nucleus弓状核;弧形核
1704年,“坚果的核心”; 1708年,“彗星的头部”; 源自拉丁语 nucleus “核心”,源自 nucula “小坚果”,是 nux(属格 nucis)“坚果”的小型形式,源自 PIE *kneu- “坚果”(源头还包括中古爱尔兰语 cnu,威尔士语 cneuen,中古布列塔尼语 knoen “坚果”,古诺尔斯语 hnot,古英语 hnutu “坚果”)。
“中央物质或事物,其他物质聚集或收集的中心”,通常意义上自1762年起。在生物学中,“细胞中密集、通常为圆形的结构,由膜包围”,自1831年起。后来发现它们包含遗传物质。物理学中的现代意义,“原子的带正电的中心核心”,始于1912年的欧内斯特·卢瑟福,但“原子的中心点”的理论用途始于1844年的法拉第。
细胞核
晶核
〔复nuclei〕细胞核:细胞内的圆形体,系光学显微镜下可见的结构,有一层薄的核膜,一个或几个核仁,不规则的染色质颗粒和核丝,以及弥漫的核质
神经核,核:一般指位于中枢神经内的一群神经细胞,与某一神经的纤维有直接的关系
核:于有机化学,指形成某种特殊化合物或一组化合物分子的基本构架的中心成分的原子组合
核,原子核:见atomic n.
细胞核
[细]胞核
又称 :[细]胞核(nuclei(复) )
神经核
又称 :神经核(Nucleus(拉))
New Latin, from Latin, kernel, from nuc-, nux nut — more at nut
The first known use of nucleus was in 1668
nudismnoun
the practice of going nude especially in private places (as beaches) that are separated from public areas
nudismnoun
the practice of going nude especially in private places (as beaches) that are separated from public areas
nudgeverb
to touch or push gentlyespecially: to attract the attention of by a push of the elbow
nudgeverb
to touch or push gentlyespecially: to attract the attention of by a push of the elbow
nudgeverb
to touch or push gentlyespecially: to attract the attention of by a push of the elbow
nude1 of 2adjective
having no clothes on
nude2 of 2noun
a nude human figure especially as shown in art
the condition of being nude
in the nude
nude1 of 2adjective
having no clothes on
nude2 of 2noun
a nude human figure especially as shown in art
the condition of being nude
in the nude
nuclidenoun
a kind of atom marked by the number of protons and neutrons and by the amount of energy contained in its nucleus
nucleusnoun
a central point, group, or mass of something: as
the small, brighter, and denser part of a galaxy or of the head of a comet
a cell part that is characteristic of all living things with the exception of viruses, bacteria, and blue-green algae, that is necessary for heredity and for making proteins, that contains the chromosomes, and that is enclosed in a nuclear membrane
a mass of gray matter or group of neurons in the central nervous system
the central part of an atom that includes nearly all of the atomic mass and consists of protons and usually neutrons
nucleusnoun
a cellular organelle of eukaryotes that is essential to cell functions (as reproduction and protein synthesis), is composed of nuclear sap and a nucleoprotein-rich network from which chromosomes and nucleoli arise, and is enclosed in a definite membrane
a mass of gray matter or group of nerve cells in the central nervous system
a characteristic and stable complex of atoms or groups in a moleculeespecially: ring sense 2
the naphthalene nucleus
the positively charged central portion of an atom that comprises nearly all of the atomic mass and that consists of protons and neutrons except in hydrogen which consists of one proton only
1 During reproduction, the helices separate, assisted by a special unwinding protein, each synthesizing an identical copy of the other from nucleotide building blocks floating about nearby in the viscous liquid of the cell nucleus.
2 In K-capture, the nucleus absorbs one of the two electrons from its innermost electron “shell”— the “K” shell—thereby transforming a nuclear proton into a neutron.
3 “I feel that one ought to make a serious attempt to get up to 60 or 70 million volts. . . With such particles, we should begin to learn the true mechanics of the nucleus.”
4 Cytoplasm will flow easily from one to the other, the nuclei will combine, and it will become, for a time anyway, a single cell with two complete, alien genomes, ready to dance, ready to multiply.
5 The nucleus of this cell contains all the genes needed to produce a new sheep.
这个细胞的细胞核含有生产一只新绵羊的必需的基因.
6 There was no blue stained nucleus at each time point Group B.
B组各时间点未见蓝染的细胞核.
7 The red blood cell of chickens has a nucleus.
鸡的红色血细胞有一个细胞核.
8 Cohesiveness is the nucleus motive force of promoting unity behavior of a class.
班级团体凝聚力是班级团体行为的核心动力.
9 Prominent nucleoli are seen in the nuclei of this prostatic adenocarcinoma, which is a characteristic feature.
细胞核中可见明显核仁是前列腺癌典型的特征.
10 The atom as a whole carried a neutral charge: the negative charges of its orbital electrons balanced the positive charge of the nucleus, the latter created by an excess of protons over electrons.
11 Largest of these is the nucleus.
这些小部件中最大就是细胞核.
12 The nucleus of the bleached cell was unable to direct the synthesis of new chloroplasts.
这种漂白的细胞核不能直接合成新的叶绿体.
13 Theoretical breakthrough that it was, complementarity did nothing to resolve the paradoxical results emanating from the atomic nucleus.
14 The nucleus might have a small rocky core.
彗核内可能有一个小的石质核心。
15 Nevertheless, most of the mass of an atom is in its nucleus; the electrons are by comparison just clouds of moving fluff.
16 The family is the nucleus of the community.
家庭是社会的核心.
17 This is a long, thin cell with an elongated nucleus.
它又细又长, 有一个长梭形细胞核.
18 Neutrons and protons are bound together in the nucleus of an atom.
在原子核里,中子和质子是结合在一起的。
19 Referenced criteria and further typing depend on growth pattern and ground glass nuclei characteristics.
参考指标和进一步分型靠肿瘤生长方式、毛玻璃样细胞核等特点.
20 Mistakenly, he believed that new cells formed by being budded off the nuclei.
但是, 他错误地认为子细胞核是从母细胞核中出芽产生的.
1 开始
open opening initiative inceptive go-off commencement START off fresh birth threshold Dawn onset inception baptism outset oncoming lead-off -escent fall commence introduce wage initiate flesh inaugurate inchoate get begin approach launch float originate descend shake a leg set on foot start in at the outset fire away
2 仁
3 原子核
5 开端
inchoation start top beginning opening threshold dawn opener sunrise inception outset prologue leadoff dawning exordium proem
6 核心
central hard-core center heart core vital kernel crux nub nitty-gritty Hardpan nerve centre theme point subject quick CORE pulse cadre pith basic inner machine centre root pivotal centre stage hub gut pillar pivot locus soul nuclear nerve nexus yolk umbilicus vitals metr- eye bone nut essence epicenter hardpan the milk in the coconut
7 细胞核
8 环
annular armillary verticil eye round ring cycle circle loop wreath orb whirl tach roundel annulus tache toroid annulation circum- cycl- rope quoit cyclic annulate link basket collar circus cirque gyre gyral
11 基点