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:

Exponential    音标拼音: [,ɛkspon'ɛntʃəl] [,ɛkspon'ɛnʃəl]
n. 指数
a. 指数的,幂数的

指数指数的,幂数的

exponential
指数

exponential
指数

exponential
adj 1: of or involving exponents; "exponential growth"
n 1: a function in which an independent variable appears as an
exponent [synonym: {exponential}, {exponential function}]

Exponential \Ex`po*nen"tial\, a. [Cf. F. exponentiel.]
1. Pertaining to exponents; involving variable exponents; as,
an exponential expression; exponential calculus; an
exponential function.
[1913 Webster]

2. changing over time in an exponential manner, i. e.
increasing or decreasing by a fixed ratio for each unit of
time; as, exponential growth; exponential decay.
[PJC]

Note:

{Exponential growth} is characteristic of bacteria and other
living populations in circumstances where the conditions
of growth are favorable, and all required nutrients are
plentiful. For example, the bacterium {Escherichia coli}
in rich media may double in number every 20 minutes until
one of the nutrients becomes exhausted or waste products
begin to inhibit growth. Many fascinating thought
experiments are proposed on the theme of exponential
growth. One may calculate, for example how long it would
take the progeny of one {Escherichia coli} to equal the
mass of the known universe if it multiplied unimpeded at
such a rate. The answer, assuming the equivalent of
10^{80} hydrogen atoms in the universe, is less than three
days. Exponential increases in a quantity can be
surprising, and this principle is often used by banks to
make investment at a certain rate of interest seem to be
very profitable over time.

{Exponential decay} is exhibited by decay of radioactive
materials and some chemical reactions (first order
reactions), in which one-half of the initial quantity of
radioactive element (or chemical substance) is lost for
each lapse of a characteristic time called the
{half-life}.
[PJC]

{Exponential curve}, a curve whose nature is defined by means
of an exponential equation.

{Exponential equation}, an equation which contains an
exponential quantity, or in which the unknown quantity
enters as an exponent.

{Exponential quantity} (Math.), a quantity whose exponent is
unknown or variable, as a^{x}.

{Exponential series}, a series derived from the development
of exponential equations or quantities.
[1913 Webster]

39 Moby Thesaurus words for "exponential":
algorismic, algorithmic, aliquot, cardinal, decimal, differential,
digital, even, figural, figurate, figurative, finite, fractional,
imaginary, impair, impossible, infinite, integral, irrational,
logarithmic, logometric, negative, numeral, numerary, numerative,
numeric, odd, ordinal, pair, positive, possible, prime, radical,
rational, real, reciprocal, submultiple, surd, transcendental


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


  • Cruise Critic Community
    Cruise Critic Community Categories Welcome to Cruise Critic Need Help Using the Forums? Check Here! TEST FORUM 23 6k posts
  • Celebrity Cruises: Ask a Question - Cruise Critic
    Find helpful information and tips about Celebrity Cruises Cruises from the Cruise Critic community Learn about recommendations, sailings and ask questions about your next Celebrity Cruises cruise Experience all Celebrity Cruises has to offer with the help of past, present and future Celebrity Cruises cruisers
  • Carnival Cruise Lines: Ask a Question - Cruise Critic
    Find helpful information and tips about Carnival Cruise Lines Cruises from the Cruise Critic community Learn about recommendations, sailings and ask questions about your next Carnival Cruise Lines cruise Experience all Carnival Cruise Lines has to offer with the help of past, present and future Carnival Cruise Lines cruisers
  • Royal Caribbean International: Ask a Question - Cruise Critic
    Find helpful information and tips about Royal Caribbean International Cruises from the Cruise Critic community Learn about recommendations, sailings and ask questions about your next Royal Caribbean International cruise Experience all Royal Caribbean International has to offer with the help of past, present and future Royal Caribbean International cruisers
  • Welcome to Cruise Critic
    Before emailing the Community Team, we ask that you please browse the many pinned help topics below Also, your question may have been asked by other members and answered -- please browse those as well Note: This area is intended only for questions and answers relating to technical assistance in using these message boards Please do not post general cruise-related questions or Roll Calls here
  • Holland America Line: Ask a Question - Cruise Critic
    Find helpful information and tips about Holland America Line Cruises from the Cruise Critic community Learn about recommendations, sailings and ask questions about your next Holland America Line cruise Experience all Holland America Line has to offer with the help of past, present and future Holland America Line cruisers
  • Categories - Cruise Critic Community
    Cruise Critic News Features Up to the minute news and feature articles from Cruise Critic!
  • Find Your Cruise Roll Call - Cruise Critic Message Board Forums
    Join the Cruise Critic community to connect with fellow cruisers, share experiences, and find roll calls for your upcoming cruise
  • P O Cruises ( UK ) - Cruise Critic Community
    Continue your P O Cruises search Find a Cruise Find a Roll Call Read Reviews Write a Review
  • Ask a Cruise Question - Cruise Critic Community
    Who's been on Cruise Critic the longest? 1 2 3 By Sigyn, January 30 57 replies 1 8k views chipmaster 7 hours ago





中文字典-英文字典  2005-2009