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：

parabola    音标拼音: [pɚ'æbələ]
n. 抛物线

抛物线

parabola
抛物线

parabola
n 1: a plane curve formed by the intersection of a right
circular cone and a plane parallel to an element of the
curve

Parabola \Pa*rab"o*la\, n.; pl. {Parabolas}. [NL., fr. Gr. ?; --
so called because its axis is parallel to the side of the
cone. See {Parable}, and cf. {Parabole}.] (Geom.)
(a) A kind of curve; one of the conic sections formed by the
intersection of the surface of a cone with a plane
parallel to one of its sides. It is a curve, any point of
which is equally distant from a fixed point, called the
focus, and a fixed straight line, called the directrix.
See {Focus}.
(b) One of a group of curves defined by the equation y =
ax^{n} where n is a positive whole number or a positive
fraction. For the {cubical parabola} n = 3; for the
{semicubical parabola} n = 3/2. See under {Cubical}, and
{Semicubical}. The parabolas have infinite branches, but
no rectilineal asymptotes.
[1913 Webster]


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


  • Australia - Wikipedia
    Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands
  • Australia (continent) - Wikipedia
    Australia is the only First World country on the Australia-New Guinea continent, although the economy of Australia is by far the largest and most dominant economy in the region and one of the largest in the world
  • Demographics of Australia - Wikipedia
    Today, most of Australia's Indigenous population live on the east coast of Australia, where almost 60% of Indigenous Australians live in New South Wales (208,476) and Queensland (188,954) which roughly represents 2–5% of those state's populations
  • History of Australia - Wikipedia
    The colonies voted by referendum to unite in a federation in 1901, and modern Australia came into being Australia fought as part of British Empire and later Commonwealth in the two world wars and was to become a long-standing ally of the United States through the Cold War to the present
  • Australia - Wikipedia, la enciclopedia libre
    Australia, oficialmente, la Mancomunidad de Australia (en inglés: Commonwealth of Australia, 11 AFI: ˈkɒmənˌwelθ əv ɒˈstreɪljə ), es un país soberano que abarca la Australia continental, la isla de Tasmania y numerosas islas menores
  • Australia - Simple English Wikipedia, the free encyclopedia
    Australia, officially the Commonwealth of Australia, is an island country and sovereign state located in the southern hemisphere, in Oceania Its capital city is Canberra, and its largest city is Sydney
  • Portal:Australia - Wikipedia
    Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands
  • Outline of Australia - Wikipedia
    Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands
  • Austrália – Wikipédia, a enciclopédia livre
    Austrália (em inglês: Australia, pronunciado: [ɒˈstreɪliə, ə-], coloquialmente: [-jə]), oficialmente Comunidade da Austrália (em inglês: Commonwealth of Australia), é um país do hemisfério sul, localizado na Oceania, que compreende a menor área continental do mundo [7][8] ("continente australiano"), a ilha da Tasmânia e várias
  • Australia | History, Cities, Population, Capital, Map, Facts | Britannica
    Australia is the smallest continent and one of the largest countries on Earth, lying between the Pacific and Indian oceans in the Southern Hemisphere Its capital city is Canberra, and its most important economic and cultural centers are Sydney and Melbourne





中文字典-英文字典  2005-2009