英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   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       







请输入英文单字，中文词皆可：

cytogenesis    
细胞发生

细胞发生

cytogenesis
n 1: the origin and development and variation of cells [synonym:
{cytogenesis}, {cytogeny}]

Cytogenesis \Cy`to*gen"e*sis\ (s?`t?-j?n"?-s?s), n. [Gr. ky`tos
hollow vessel E. genesis.] (Biol.)
Development of cells in animal and vegetable organisms. See
{Gemmation}, {Budding}, {Karyokinesis}; also {Cell
development}, under {Cell}.
[1913 Webster] Cytogenic


Cell \Cell\, n. [OF. celle, fr. L. cella; akin to celare to
hide, and E. hell, helm, conceal. Cf. {Hall}.]
1. A very small and close apartment, as in a prison or in a
monastery or convent; the hut of a hermit.
[1913 Webster]

The heroic confessor in his cell. --Macaulay.
[1913 Webster]

2. A small religious house attached to a monastery or
convent. "Cells or dependent priories." --Milman.
[1913 Webster]

3. Any small cavity, or hollow place.
[1913 Webster]

4. (Arch.)
(a) The space between the ribs of a vaulted roof.
(b) Same as {Cella}.
[1913 Webster]

5. (Elec.) A jar of vessel, or a division of a compound
vessel, for holding the exciting fluid of a battery.
[1913 Webster]

6. (Biol.) One of the minute elementary structures, of which
the greater part of the various tissues and organs of
animals and plants are composed.
[1913 Webster]

Note: All cells have their origin in the primary cell from
which the organism was developed. In the lowest animal
and vegetable forms, one single cell constitutes the
complete individual, such being called unicelluter
orgamisms. A typical cell is composed of a semifluid
mass of protoplasm, more or less granular, generally
containing in its center a nucleus which in turn
frequently contains one or more nucleoli, the whole
being surrounded by a thin membrane, the cell wall. In
some cells, as in those of blood, in the am[oe]ba, and
in embryonic cells (both vegetable and animal), there
is no restricting cell wall, while in some of the
unicelluliar organisms the nucleus is wholly wanting.
See Illust. of {Bipolar}.
[1913 Webster]

{Air cell}. See {Air cell}.

{Cell development} (called also {cell genesis}, {cell
formation}, and {cytogenesis}), the multiplication, of
cells by a process of reproduction under the following
common forms; segmentation or fission, gemmation or
budding, karyokinesis, and endogenous multiplication. See
{Segmentation}, {Gemmation}, etc.

{Cell theory}. (Biol.) See {Cellular theory}, under
{Cellular}.
[1913 Webster]


请选择你想看的字典辞典：
单词字典翻译
Cytogenesis查看　Cytogenesis　在百度字典中的解释百度英翻中〔查看〕
Cytogenesis查看　Cytogenesis　在Google字典中的解释Google英翻中〔查看〕
Cytogenesis查看　Cytogenesis　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Stars - NASA Science
    Stars form in large clouds of gas and dust called molecular clouds Molecular clouds range from 1,000 to 10 million times the mass of the Sun and can span as much as hundreds of light-years Molecular clouds are cold which causes gas to clump, creating high-density pockets Some of these clumps can collide with each other or collect more matter
  • Star Types - Science@NASA
    The star starts fusing helium to carbon, like lower-mass stars But then, when the core runs out of helium, it shrinks, heats up, and starts converting its carbon into neon, which releases energy This process continues as the star converts neon into oxygen, oxygen into silicon, and finally silicon into iron
  • The Lives, Times, and Deaths of Stars - NASA Science
    All stars are born in clouds of dust and gas like the Pillars of Creation in the Eagle Nebula pictured below In these stellar nurseries, clumps of gas form, pulling in more and more mass as time passes As they grow, these clumps start to spin and heat up Once they get heavy and hot enough (like, 27 million degrees Fahrenheit or 15 million degrees Celsius), nuclear fusion starts in their cores
  • Exploring the Birth of Stars - NASA Science
    Young stars shine brightly in ultraviolet light, while visible light reveals the structure of star-forming clouds, the shock waves induced by jets from forming stars, and colorful ionized gas in the nebulae energized by young stars Infrared light’s longer wavelengths can pass through the cloud relatively undisturbed
  • Star Lifecycle - Science@NASA
    Stars, like our Sun, can be thought of as "basic particles" of the Universe, just as atoms are "basic particles" of matter Groups of stars make up galaxies, while planets and ultimately life arise around stars Although stars have been the main topic of astronomy for thousands of years, we have begun to understand them in detail only in recent
  • Hubble Snapshot Captures Life Cycle of Stars - Science@NASA
    This picture nicely illustrates the entire stellar life cycle of stars, starting with the Bok globules and giant gaseous pillars (evidence of embryonic stars), followed by circumstellar disks around young stars, and progressing to aging, massive stars in a young starburst cluster The blue super-giant with its ring and bipolar outflow [upper
  • Multiple Star Systems - Science@NASA
    Two stars orbit each other in a binary system in this animation NASA's Goddard Space Flight Center Chris Smith (USRA) Binary Stars The variety seen in double-star systems is nearly as rich as the galaxy’s stellar population as a whole These pairs can differ significantly in mass, with, say, a mid-sized yellow star like our Sun locked in an
  • Other Stars, - Science@NASA
    Six Stars, One System Two-star systems are quite common in our galaxy Even systems with three stars are not especially rare – our nearest stellar neighbor, Alpha Centauri, is just such a trio But then there's TYC 7037-89-1, a system of six stars in a balletic interplay rivaling Tchaikovsky Explore
  • Hubbles Nebulae - Science@NASA
    White dwarf stars are objects with the approximate mass of the Sun but the size of the Earth, making them one of the densest forms of matter in the universe after black holes and neutron stars The white dwarf star's ultraviolet radiation ionizes the gas of the planetary nebula and causes it to glow, just as stars do in emission nebulae
  • Solar System Exploration - Science@NASA
    The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1 3 million asteroids, and about 3,900 comets





中文字典-英文字典  2005-2009