英文字典中文字典Word104.com



中文字典辭典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z   







請輸入英文單字，中文詞皆可：

nucleus    音標拼音: [n'ukliəs]
n. 核心,核子,原子核,中堅

核心,核子,原子核,中堅

nucleus
核( 心 ); 核心; 核心程序; 核

nucleus
核心

nucleus
n 1: a part of the cell containing DNA and RNA and responsible
for growth and reproduction [synonym: {nucleus}, {cell
nucleus}, {karyon}]
2: the positively charged dense center of an atom
3: a small group of indispensable persons or things; "five
periodicals make up the core of their publishing program"
[synonym: {core}, {nucleus}, {core group}]
4: (astronomy) the center of the head of a comet; consists of
small solid particles of ice and frozen gas that vaporizes on
approaching the sun to form the coma and tail
5: any histologically identifiable mass of neural cell bodies in
the brain or spinal cord
6: the central structure of the lens that is surrounded by the
cortex [synonym: {lens nucleus}, {nucleus}]

Nucleus \Nu"cle*us\, n.; pl. E. {Nucleuses}, L. {Nuclei}. [L., a
kernel, dim. fr. nux, nucis, nut. Cf. {Newel} post.]
[1913 Webster]
1. A kernel; hence, a central mass or point about which
matter is gathered, or to which accretion is made; the
central or material portion; -- used both literally and
figuratively.
[1913 Webster]

It must contain within itself a nucleus of truth.
--I. Taylor.
[1913 Webster]

2. (Astron.) The body or the head of a comet.
[1913 Webster]

3. (Bot.)
(a) An incipient ovule of soft cellular tissue.
(b) A whole seed, as contained within the seed coats.
[1913 Webster]

4. (Biol.) A body, usually spheroidal, in a eukaryotic cell,
distinguished from the surrounding protoplasm by a
difference in refrangibility and in behavior towards
chemical reagents, which contains the chromosomal genetic
material, including the chromosomal DNA. It is more or
less protoplasmic, and consists of a clear fluid
(achromatin) through which extends a network of fibers
(chromatin) in which may be suspended a second rounded
body, the nucleolus (see {Nucleoplasm}). See {Cell
division}, under {Division}.
[1913 Webster PJC]

Note: The nucleus is sometimes termed the endoplast or
endoblast, and in the protozoa is supposed to be
concerned in the female part of the reproductive
process. See {Karyokinesis}.
[1913 Webster]

5. (Zool.)
(a) The tip, or earliest part, of a univalve or bivalve
shell.
(b) The central part around which additional growths are
added, as of an operculum.
(c) A visceral mass, containing the stomach and other
organs, in Tunicata and some mollusks.
[1913 Webster]

112 Moby Thesaurus words for "nucleus":
Anlage, Kern, NMR, alpha particle, antibaryon, antilepton,
antimeson, atomic nucleus, atomic particle, axiom, axis, baryon,
basichromatin, beta particle, bud, center, center of action,
center of gravity, centroid, centrum, chromatin, chromatin strands,
core, dead center, diameter, diaphragm, egg, electron,
elementary particle, elixir, embryo, epicenter, equator, essence,
essential, flower, focus, fundamental, germ, germen, gist,
gravamen, heart, heterochromatin, hub, hypostasis, inner essence,
interior, karyosome, karyotin, kernel, lepton, loins, macronucleus,
marrow, mean, meat, median, medulla, meganucleus, meson,
metacenter, micronucleus, middle, midmost, midriff, midst, nave,
navel, neutron, nub, nuclear force, nuclear magnetic resonance,
nuclear particle, nuclear resonance, nucleolus, nucleon,
nucleosynthesis, nuts and bolts, omphalos, ovum, photon, pith,
pivot, plasmosome, postulate, principle, proton, quid, quiddity,
quintessence, rudiment, sap, seed, soul, spark, spermatozoon,
spirit, storm center, strangeness, strong interaction, stuff,
substance, the nitty-gritty, thick, thick of things, triton,
umbilicus, valence electron, waist, waistline, zone

請選擇你想看的字典辭典：
單詞字典翻譯
Nucleus查看　Nucleus　在Google字典中的解釋Google英翻中〔查看〕
Nucleus查看　Nucleus　在Yahoo字典中的解釋Yahoo英翻中〔查看〕

安裝中文字典英文字典查詢工具!


中文字典英文字典工具:
選擇顏色:
輸入中英文單字

































































英文字典中文字典相關資料:
  • [FREE] Describe the function of each organelle: - Nucleus - Ribosome . . .
    The nucleus, which house genetic material, the mitochondria, which generate chemical energy, and the ribosomes, which put together proteins, are some of the more significant cell organelles All cellular **organelles **are composed of **macromolecules **such lipids, proteins, nucleic acids, and carbohydrates (DNA, RNA)
  • Which statement is true about the nucleus? - Brainly. com
    B The presence of neutrons, the strong nuclear force, and the residual strong force hold the nucleus together To understand why this is the case, let's break down the components involved in holding the nucleus together: Neutrons: Neutrons are neutral particles found within the nucleus alongside positively charged protons They play a crucial
  • Label the steps of protein synthesis and the organelles involved in . . .
    This occurs in the nucleus During the ending of transcription, the completed mRNA strand detaches from DNA and **exits the nucleus and goes into a ribosome in the cytoplasm In the ribosome, translation **occurs where the genetic code in mRNA is read and protein is synthesized
  • What is a key difference between chemical and nuclear reactions?
    A nucleus with a large mass will be on the left side, and there will be electrons in the equation A nucleus with a large mass will be on the right side, and there will be neutrons in the equation Nuclear Processes Unit Test 9 of 189 of 18 Items Question How is fission different from a simple chemical reaction?(1 point) Protons cause fission
  • Draw the nucleus and label the following parts: - Brainly. com
    The nucleus of a cell contains three key parts: the nuclear membrane, nucleolus, and chromatin The nuclear membrane surrounds the nucleus and controls material exchange, the nucleolus is involved in ribosome production, and chromatin consists of DNA and proteins
  • [FREE] The reactions listed below are either chemical reactions or . . .
    Nuclear Reactions involve changes in an atom's nucleus and can result in the transformation of elements Let's analyze each reaction: H + + O H − → H 2 O This is a chemical reaction known as an acid-base neutralization It involves the combination of hydrogen ions (H +) and hydroxide ions (O H −) to form water (H 2 O) Since it involves
  • The diagram below shows some subatomic particles. - Brainly. com
    The large outer circle labeled 'X' most likely represents a nucleus, which is the center of an atom where protons and neutrons are located Understanding the Nucleus: The nucleus is composed of protons (which have a positive charge) and neutrons (which have no charge) Distinction Between Particles: Protons are positively charged,





中文字典-英文字典  2005-2009

|中文姓名英譯,姓名翻譯 |简体中文英文字典