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单词 nitrous oxide
释义
nitrous oxide
noun[U]
chemistryspecialized
uk
/ˌnaɪ.trəs ˈɒk.saɪd/us
/ˌnaɪ.trəs ˈɑːk.saɪd/
(alsoinformallaughing gas)
agaswith afaintsweetsmellthat can bebreathedin withoxygentoreducepain, forexampleduringchildbirthormedicalexaminations:
Heperformedover 20surgicalproceduresusing nitrousoxideas theanaesthetic.
Nitrousoxidegasand pethidine can beusefulanalgesicsduringlabour.
See also
gas and air
More examples
  • Nitrousoxideis used as ananaesthetic, and alsoreleasednaturallyfrombacteriainsoils.
  • Themajorityofpatientswhoreceiveproceduralpainreliefusing nitrousoxideandoxygendo so athealthcentres.
  • Nitrousoxidehas beenreportedtoproducecardiovasculardepressionwhen given withhigherdosesof fentanyl.
SMART Vocabulary: related words and phrases
Chemical elements
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  • silicon
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  • sulphur
  • transition metal
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(Definition ofnitrous oxidefrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)
nitrous oxide
noun[U]
chemistryspecialized
uk
/ˌnaɪ.trəs ˈɒk.saɪd/us
/ˌnaɪ.trəs ˈɑːk.saɪd/
(informallaughing gas)
atypeofgaswith asweetsmellthat is used as aweakanaesthetic(=substancethatstopspain),especiallybydentists
一氧化二氮；笑气（一种带甜味的气体，有轻微的麻醉作用，常用于牙科止疼）

Examplesofnitrous oxide

nitrous oxide
Most patients were intubated and anesthetized withnitrousoxideand oxygen during catheterization.
From theCambridge English Corpus
Nitrogen losses as ammonia andnitrousoxideare also undesirable due to their environmental impacts.
From theCambridge English Corpus
Effect of straw addition onnitrousoxideand methane emissions from stored farmyard manures.
From theCambridge English Corpus
They have been applied in sub-anaesthetic concentration, both individually and in combination withnitrousoxide, for pain relief in labour.
From theCambridge English Corpus
Nitrousoxideand methane emissions following application of animal manures to grassland.
From theCambridge English Corpus
Sources of nitric oxide andnitrousoxidefollowing wetting of dry soil.
From theCambridge English Corpus
Denitrification of leached nitrate accounted for 26-35% ofnitrousoxideemissions.
From theCambridge English Corpus
The editors move on more briefly to methane, and then tonitrousoxide, before wrapping up with some thoughts on interactions.
From theCambridge English Corpus
Nitrousoxide, used as anaesthetic agent, can result in myeloneuropathy.
From theCambridge English Corpus
Nitrousoxidetransfer across the placenta and condition of the newborn at delivery.
From theCambridge English Corpus
Some would have been retained in the soil, but most would be lost to the environment by leaching or to the atmosphere as ammonia,nitrousoxideor dinitrogen.
From theCambridge English Corpus
The determination of cerebral bloodflowin man by the use ofnitrousoxidein low concentrations.
From theCambridge English Corpus
The exogenous scenarios concern economic growth, population growth, urban population, autonomous energy efficiency improvements, decarbonization of the energy use,nitrousoxideemissions, and methane emissions.
From theCambridge English Corpus
Changes in fresh gas (oxygen ornitrousoxide) flows and volatile anesthetic concentrations, made by the anesthetist, to prevent or react to adverse events were recorded.
From theCambridge English Corpus
Emissions of ammonia,nitrousoxideand methane from cattle manure heaps: effect of compaction and covering.
From theCambridge English Corpus
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/nitrous-oxide##
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更新时间：2025/2/10 23:11:01