英语词汇“femtogram”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

1. Prefixed to the name of a unit of measurement to denote a factor of 10⁻¹⁵ (one thousand-million-millionth), as femtoampere, femtogram, etc. Also: forming corresponding adjectives, as femtomolar. Symbol f.See also femtosecond n.

ΚΠ

1963 Electronics 5 Apr. 33 (heading) Tunnel diode detects currents down to 100 femtoamperes.

1976 Pop. Mech. Nov. 186/3 The new measurements will be stated in decibels above one femtowatt (dBf), rather than in femtowatts themselves.

1988 Mouse News Let. Nov. 84 We have developed a highly sensitive biochemical microassay for ADA which is capable of detecting femtomolar amounts of reaction product.

1994 Sci. Amer. Jan. 14/1 Frosty femtokelvin (quadrillionths of a degree) temperatures may yet be within reach.

1995 Economist 14 Oct. 146/3 Their shovel can scrape up a femtogram—about 10,000 molecules—of a material such as paraffin wax.

2000 Nature 10 Feb. 581/1 The collisions create temperatures 100,000 times hotter than the centre of the Sun, and the highest energy densities (3–4 GeV per cubic femtometre) ever reached over a large volume in laboratory experiments.

2010 PC Pro May 140/2 Wherever a stripe crosses one below it forms a capacitor so small it's measured in femtofarads (10⁻¹⁵F).

单词	femtogram
释义	> as lemmas femtogram 1. Prefixed to the name of a unit of measurement to denote a factor of 10⁻¹⁵ (one thousand-million-millionth), as femtoampere, femtogram, etc. Also: forming corresponding adjectives, as femtomolar. Symbol f.See also femtosecond n. ΚΠ 1963 Electronics 5 Apr. 33 (heading) Tunnel diode detects currents down to 100 femtoamperes. 1976 Pop. Mech. Nov. 186/3 The new measurements will be stated in decibels above one femtowatt (dBf), rather than in femtowatts themselves. 1988 Mouse News Let. Nov. 84 We have developed a highly sensitive biochemical microassay for ADA which is capable of detecting femtomolar amounts of reaction product. 1994 Sci. Amer. Jan. 14/1 Frosty femtokelvin (quadrillionths of a degree) temperatures may yet be within reach. 1995 Economist 14 Oct. 146/3 Their shovel can scrape up a femtogram—about 10,000 molecules—of a material such as paraffin wax. 2000 Nature 10 Feb. 581/1 The collisions create temperatures 100,000 times hotter than the centre of the Sun, and the highest energy densities (3–4 GeV per cubic femtometre) ever reached over a large volume in laboratory experiments. 2010 PC Pro May 140/2 Wherever a stripe crosses one below it forms a capacitor so small it's measured in femtofarads (10⁻¹⁵F). extracted from femto-comb. form < as lemmas
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