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词汇 billionth
释义 billionth
ordinal number
uk /ˈbɪl.jənθ/ us /ˈbɪl.jənθ/
1,000,000,000th written as a word第十亿个
SMART Vocabulary: related words and phrases

Numbers: ordinal
eighteenth
eighth
eleventh
fiftieth
fortieth
fourth
millionth
nano-
quinti
seventh
sixteenth
sixth
tertius
thirteenth
thirtieth
thousandth
trillionth
twelfth
twenty-first
umpteenth
billionth
noun[ C ]
uk /ˈbɪl.jənθ/ us /ˈbɪl.jənθ/
one of a billion equal parts of something: 十亿分之一
a/one billionth of a second十亿分之一秒
SMART Vocabulary: related words and phrases

Fractions
complex fraction
compound fraction
deci-
denominator
eighteenth
eighth
fortieth
fraction
in
millionth
mixed fraction
ninth
proper fraction
seventh
seventieth
sixteenth
sixth
sixtieth
thirteenth
thirtieth

Examples of billionth


billionth
Males are attracted to the one-billionth of a gram of pheromones released by a female moth for location.
From
Wikipedia

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The model scales the entire solar systemboth planet size and distances between themdown to one five billionth of its actual size.
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The negative gravitational energy of the earth, for example, is less than a billionth of the positive energy of the matter particles the earth is made of.
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Wikipedia

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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 a billionth of a gram.
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Wikipedia

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A nanometer is one-billionth of a meter.
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The motor, the world's smallest electric motor, is just a nanometer (billionth of a meter) across (60,000 times smaller than the thickness of a human hair).
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Wikipedia

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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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Wikipedia

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Put simply, it is the application of material sciences at around the nanometre scale—that is, one billionth of a metre.
From the
Hansard archive

Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0
A nanometre is one billionth of 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 the Open Parliament Licence v3.0
In 1973 the one billionth barrel of oil was pumped from the nearby oil field.
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Wikipedia

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A nanometer is a billionth of a meter.
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The park also features a model, in 1:1 billionth scale, of the sun and inner planets of our solar system.
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Wikipedia

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The ear can normally detect 1-billionth of an atmosphere of sound pressure level, hence it is incredibly sensitive.
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Wikipedia

This example is from Wikipedia and may be reused under a CC BY-SA license.
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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.
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