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单词 billionth
释义
billionth
ordinal number
uk
/ˈbɪl.jənθ/us
/ˈbɪl.jənθ/
1,000,000,000th written as a word
第十亿个
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Numbers: ordinal
  • eighteenth
  • eighth
  • eleventh
  • fiftieth
  • fortieth
  • fourth
  • millionth
  • nano-
  • quinti
  • seventh
  • sixteenth
  • sixth
  • tertius
  • thirteenth
  • thirtieth
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billionth
noun[C]
uk
/ˈbɪl.jənθ/us
/ˈbɪl.jənθ/
one of abillionequalpartsof something:
十亿分之一
a/one billionthofa second十亿分之一秒
SMART Vocabulary: related words and phrases
Fractions
  • A, a
  • complex fraction
  • compound fraction
  • deci-
  • denominator
  • eighteenth
  • eighth
  • fortieth
  • fraction
  • in
  • millionth
  • ninth
  • proper fraction
  • seventh
  • seventieth
  • sixteenth
  • sixth
  • sixtieth
  • thirteenth
  • thirtieth
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(Definition ofbillionthfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

Examplesofbillionth

billionth
Males are attracted to the one-billionthof a gram of pheromones released by a female moth for location.
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The model scales the entire solar systemboth planet size and distances between themdown to one fivebillionthof its actual size.
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The negative gravitational energy of the earth, for example, is less than abillionthof the positive energy of the matter particles the earth is made of.
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An attogram is one-thousandth of a femtogram, which is one-thousandth of a picogram, which is one-thousandth of a nanogram, which is abillionthof a gram.
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A nanometer is one-billionthof a meter.
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The motor, the world's smallest electric motor, is just a nanometer (billionthof a meter) across (60,000 times smaller than the thickness of a human hair).
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Specifications call for a pulse of 100 billionths of a second, about a million times shorter than exposures achieved with a high-end conventional camera.
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The team cooled fermionic lithium-6 to less than 150 billionths of one kelvin above absolute zero using infrared laser cooling.
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By contrast, the time taken to access a given byte of information stored in random-access memory is measured in billionths of a second, or nanoseconds.
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Put simply, it is the application of material sciences at around the nanometre scale—that is, onebillionthof a metre.
From the
Hansard archive
Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0
A nanometre is onebillionthof a metre, or approximately 10 hydrogen molecules lying end to end.
From the
Hansard archive
Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0
In 1973 the onebillionthbarrel of oil was pumped from the nearby oil field.
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A nanometer is abillionthof a meter.
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The park also features a model, in 1:1billionthscale, of the sun and inner planets of our solar system.
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The ear can normally detect 1-billionthof an atmosphere of sound pressure level, hence it is incredibly sensitive.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/billionth##
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更新时间：2024/12/28 10:53:07