| 词汇 | nitrous-oxide |
| 释义 | nitrous oxide noun[ U ] chemistry specializeduk /ˌnaɪ.trəs ˈɒk.saɪd/ us /ˌnaɪ.trəs ˈɑːk.saɪd/(also informallaughing gas) a gas with a faint sweet smell that can be breathed in with oxygen to reduce pain, for example during childbirth or medical examinations : 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） He performed over 20 surgical procedures using nitrous oxide as the anaesthetic. Nitrous oxide gas and pethidine can be useful analgesics during labour. See also gas and air Nitrous oxide is used as an anaesthetic, and also released naturally from bacteria in soils. The majority of patients who receive procedural pain relief using nitrous oxide and oxygen do so at health centres. Nitrous oxide has been reported to produce cardiovascular depression when given with higher doses of fentanyl. Chemical elements actinium alkali metal americium astatine berkelium brimstone bromine calcium fluorine germanium lithium manganese nickel plutonium quicksilver selenium silicon sodium sulphur transition metal Examples of nitrous oxidenitrous oxide Most patients were intubated and anesthetized with nitrousoxide and oxygen during catheterization. Nitrogen losses as ammonia and nitrousoxide are also undesirable due to their environmental impacts. Effect of straw addition on nitrousoxide and methane emissions from stored farmyard manures. They have been applied in sub-anaesthetic concentration, both individually and in combination with nitrousoxide, for pain relief in labour. Nitrousoxide and methane emissions following application of animal manures to grassland. Sources of nitric oxide and nitrousoxide following wetting of dry soil. Denitrification of leached nitrate accounted for 26-35% of nitrousoxide emissions. The editors move on more briefly to methane, and then to nitrousoxide, before wrapping up with some thoughts on interactions. Nitrousoxide, used as anaesthetic agent, can result in myeloneuropathy. Nitrousoxide transfer across the placenta and condition of the newborn at delivery. Some would have been retained in the soil, but most would be lost to the environment by leaching or to the atmosphere as ammonia, nitrousoxide or dinitrogen. The determination of cerebral bloodflowin man by the use of nitrousoxide in low concentrations. The exogenous scenarios concern economic growth, population growth, urban population, autonomous energy efficiency improvements, decarbonization of the energy use, nitrousoxide emissions, and methane emissions. Changes in fresh gas (oxygen or nitrousoxide) flows and volatile anesthetic concentrations, made by the anesthetist, to prevent or react to adverse events were recorded. Emissions of ammonia, nitrousoxide and methane from cattle manure heaps: effect of compaction and covering. See all examples of nitrous oxide 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. |
| 随便看 |
|
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。