英语释义

1. the small bright body in the head of a comet

2. the small brighter and denser portion of a galaxy (see galaxy sense 1b)

3. a central point, group, or mass about which gathering, concentration, or accretion takes place: such as

4. 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

5. a mass of gray matter or group of cell bodies of neurons in the central nervous system

6. a characteristic and stable complex of atoms or groups in a molecule (see molecule sense 1) especially ring
the naphthalene nucleus

7. the positively charged central portion of an atom that comprises nearly all of the atomic mass and that consists of protons and usually neutrons

8. the peak of sonority in the utterance of a syllable

9. a basic or essential part core
players who are the nucleus of the team

10. the central part of most cells that contains genetic material and is enclosed in a membrane

11. the central part of an atom that is made up of protons and neutrons

12. a central or most important part of something

13. a usually round part of most cells that is enclosed in a double membrane, controls the activities of the cell, and contains the chromosomes

14. the central part of an atom that comprises nearly all of the atomic mass and that consists of protons and neutrons

15. a central point, group, or mass
Those players are the nucleus of the team.

16. 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

17. a mass of gray matter or group of nerve cells in the central nervous system

18. a characteristic and stable complex of atoms or groups in a molecule especially ring sense 2
the naphthalene nucleus

19. 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

片语

raphe nucleus中缝核

caudate nucleus[解剖] 尾状核

paraventricular nucleus室旁核；脑室壁核

amygdaloid nucleus杏仁核；扁桃状核；杏仁巢

arcuate nucleus弓状核；弧形核

crystal nucleus[晶体] 晶核

cochlear nuclei[解剖] 蜗神经核

freezing nuclei冻结核

motor nuclei运动核

suprachiasmatic nucleus[解剖] 视交叉上核

sublimation nuclei升华核

cell nucleus[细胞] 细胞核

condensation nuclei凝结核心

nucleus pulposus[胚] 髓核

vestibular nuclei前庭核

cerebellar nuclei[解剖]

lateral geniculate nucleus[解剖] 外侧膝状体核

ice nuclei冰核

raphe nuclei中缝核

atomic nucleus[核] 原子核

英汉例句

• Nuclear fusion - the melding of atomic nuclei that happens inside stars - is a long-sought goal on Earth.

  核聚变是发生在恒星内部的原子核融合，是地球上长期追求的目标。

• Some studies hinted that a majority of nuclei in snow crystals may be decayed vegetation, bacteria, or fungi spores; and so snow may be largely life-triggered.

  某些研究暗示，大多数雪晶的核也许是腐朽的植物、细菌或菌类孢子；因此，也许雪大都是由生命触发的。

• When neutrinos interact with electrons or nuclei of those water or oil molecules, they give off a flash of light that sensors can detect.

  当中微子与那些水分子或油分子的电子或原子核相互作用时，会发出传感器可以检测到的闪光。

• Simulations have found that black holes and galaxies grow together. Some observations even suggested that galaxies with active galactic nuclei were slightly distorted, a sign of a recent collision.

  仿真的结果表明，黑洞是和星系一同成长的，一些观测结果甚至显示一些含有活动星系核的星系有轻微的扭曲，这是近期发生碰撞的标志。

• As the muscle atrophied, the cells deflated to about 40 percent of their bulked-up volume, but the number of nuclei in the cells did not change.

  随着肌肉的萎缩，细胞数量与肌肉强化后的情况相比，减少了约40%，但细胞核的数量保持不变。

• Since the extra nuclei don「t die, they could be poised to make muscle proteins again, providing a type of muscle memory, he says.

  因为新增的细胞核不会死，它们便随时可以再造肌肉蛋白，使肌肉有了一种类似记忆的功能。

• Britain, so far one of the least hysterical countries, recently postponed a decision about whether making chimeric cells out of rabbit-egg cytoplasms and human nuclei should be illegal.

  英国——这个迄今最不歇斯底里的国家之一，最近对是否从兔子卵细胞的细胞质中制造出嵌合体细胞以及人类细胞核是否非法推迟作出决定。

• Traditional MRI takes advantage of the very faint magnetic signals emitted by hydrogen nuclei in the sample being imaged.

  传统MRI的优势在于捕捉氢原子核所发出的能够用于成像的极微弱的磁信号。

• Exactly how two hydrogen nuclei could fuse at room temperature has not been elaborated.

  究竟两枚氢核如何在室温下聚合，并无详细描述。

• But accelerators could potentially produce nuclear fusion, which fuses atomic nuclei together.

  而加速器可能产生核聚变，将原子核融合在一起。

• The extra nuclei stick around for at least three months -- a long time for a mouse, which lives a couple of years on average, Gundersen says.

  甘德森说：「那些增加的细胞核至少还会存在三个月——对于平均寿命只有两年的老鼠而言，可算是很长的一段时间了。」

• If the clone reaches maturity and reproduces naturally, epigenetic changes will often be reset, returning the sperm and egg nuclei to a state in which they can differentiate into all types of tissue.

  如果克隆成熟并可以自然繁殖，表观遗传变化常常会被重置，回到精子和卵细胞核的状态~可以变成所有类型的组织。

• Those new pieces include two new nuclei (byproducts), some photons (gamma rays), but also some more free neutrons, which is the key that makes nuclear fission a good candidate to generate energy.

  产生的新组成包括两个新原子核(副产物)、一些光子(伽马射线)以及更多的自由中子，它们是参与核裂变反应并产生能量的关键。

• Natural aerosols are the most common condensation nuclei in pristine environments.

  自然环境中非人为产生的气溶胶是最常见的云凝结核。

• Brown supports scientists who want to create hybrid embryos in which the nuclei of human cells are inserted into animal eggs and allowed to grow for a few days.

  布朗支持想要创造混合胚胎的科学家。这混合胚胎，由人的细胞核植入动物卵细胞，经过几天的发育而成。

• When it had cooled further, these protons and neutrons were able to get together to form the nuclei of the lightest elements-hydrogen, helium and lithium.

  而随着宇宙的进一步冷却，这些质子与中子便有能力团聚一起并组成质量最小元素中的核子，这些元素即氢、氦与锂。

• In those instances nuclei as well as cytoplasms came together and the hybrid cells made perfectly functioning enzymes that expressed the genetic code of two types of animal.

  在那些例子中，细胞核和细胞质融合在一起，杂交细胞制造出了表达两种动物遗传密码、完美运转的酶。

• The waves of damp and dry conditions suggest water is created on the moon every day, when hydrogen nuclei in the solar wind slam into oxygen-rich silicate minerals on the moon」s surface.

  潮湿和干燥条件的交替波动表明，月球上每天都在生成水——太阳风中的氢原子核与月球表面富含氧的硅酸盐矿物相撞而成。

• The reason is because the predominant force at this point is going to be the attraction that's being felt between the nuclei and the electrons in each of the atoms.

  这是因为这时候最主要的力,是吸引力，它来自于,其中一个原子的电子与另外一个原子的原子核之间。

• The circadian rhythm in mammals is regulated by two clusters of nerve cells called the suprachiasmatic nuclei (SCN) in the anterior hypothalamus.

  哺乳动物中调节昼夜节律的是两个调节神经细胞群，称为视交叉上核中的下丘脑。

• ITER aims to produce energy by fusing together the nuclei of hydrogen atoms, confined in a magnetic field at high temperatures-a process akin to that which powers the sun.

  ITER的目标是通过使约束在强磁场内部的高温氢原子核发生聚变而产生能量——这个过程跟太阳的供能方式很相似。

• Researchers had previously thought that when muscles atrophy, the extra nuclei are killed by a cell death program called apoptosis.

  研究者之前以为，当肌肉萎缩时，多余的细胞核会受细胞周期影响，随着细胞的死亡而消失。

• Such collisions should cause individual atomic nuclei to recoil, and with the right apparatus such recoils can be observed.

  因为这种碰撞会引起个体原子核的反作用，只要有适用的仪器就可以观测到这种反作用。

• The researchers compared sequences of DNA from the nuclei of African and Asian elephants, and from woolly mammoths and the American mastodon.

  研究人员对比了非洲象和亚洲象，以及来自猛犸象和美洲乳齿象的细胞核dna序列。