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

WORD ORIGINnitrogen

Origin:

1700-1800 French nitrogène, from nitre ( ➔ NITIC ACID) + -gène ‘producing’

EXAMPLES FROM THE CORPUS

Aerozine 50 was used as the fuel, with nitrogen tetroxide as the oxidizer.
Both countries would also limit nitrogen oxide emissions through stricter controls on motor vehicles.
But close examination showed that species intolerant of acid conditions or high nitrogen levels were not reappearing.
Global warming occurs when carbon dioxide and some other gases, such as methane and nitrogen oxides, accumulate in the atmosphere.
Large explosions heat vast masses of the atmosphere to such high temperatures that nitrogen is partially burned to make toxic nitrogen oxides.
On reflection, I think we made the nitrogen bands rather too wide.
Peas and beans put nitrogen into the soil.
The very low abundances of volatiles and especially the low nitrogen abundance all pose special problems.

WORD SETS► Elements

aluminium, nounargon, nounarsenic, nounbarium, nounbase metal, nounbismuth, nouncadmium, nouncaesium, nouncalcium, nouncarbon, nounchlorine, nounchromium, nouncobalt, nouncopper, nounferrous, adjectivegold, noungold, adjectivegolden, adjectivehalogen, nounhydro-, prefixhydrogen, nouniodine, nouniridium, nouniron, nounisotope, nounkrypton, nounlead, nounlithium, nounmagnesium, nounmanganese, nounmercury, nounmolybdenum, nounnickel, nounnitrogen, nounoxygen, nounphosphorus, nounplatinum, nounplutonium, nounpotassium, nounprecious metal, nounradium, nounradon, nounselenium, nounsilicon, nounsilver, nounsilver, adjectivesodium, nounstrontium, nountin, nountin, adjectivetitanium, nountrace element, nountungsten, nounuranium, nounxenon, nounzinc, noun

COLLOCATIONS FROM OTHER ENTRIES► a carbon/nitrogen/sulphur etc compound

· Use a copper compound to protect the trees from pests.

COLLOCATIONS FROM THE CORPUSADJECTIVE► liquid

· The specimens were weighed immediately, frozen in liquid nitrogen, and stored at -80°C.· The ceramics -- cables encased in a sheath of liquid nitrogen -- are being developed for power generation and other machinery applications.· In addition, it would consume liquid nitrogen for cooling purposes at approximately £20 per trip.· The tissue was then snap-frozen by immersion in liquid nitrogen before storage at -70°C for up to six months.· At both operations, biopsies from the tumour and non-tumour liver tissue were collected and snap frozen in liquid nitrogen.· After immersion in 40% glycerin solution at room temperature, they were placed on a copper stage and frozen with liquid nitrogen.· This test was used to ensure a 100% death rate of cells frozen in liquid nitrogen.· The specimens were frozen immediately in liquid nitrogen and subjected to autofluorescence microscopy.

NOUN► dioxide

· It is usually caused by the emission of particulates or nitrogen dioxide.· The sulphur dioxide level in Belfast was 32 parts per billion while the nitrogen dioxide level was 48.· The southern California air basin is the only area in the country that still fails to meet the nitrogen dioxide standard.· The gas is cleaned prior to burning and the sulphur dioxide and nitrogen dioxide, thought to contribute to acid rain, removed.· However, this statistic conceals that levels of nitrogen dioxide have changed little since 1983.· Of those figures, Britain contributed 1.84 million tonnes of sulphur and an equal amount of nitrogen dioxide.· Apart from general operating conditions, it has set emission limits for sulphur dioxide, nitrogen dioxide and carbon monoxide.

► fixation

· What are the prospects for nitrogen fixation in plants?

► gas

· Around half of the nitrogen in the burnt biomass may be released as nitrogen gas.· It was inflated with nitrogen gas within minutes and looked like a silver parachute.· Four-fifths of the modern atmosphere consists of nitrogen gas.· Bacteria then work on the nitrates converting them firstly to nitrous oxide and then to free nitrogen gas.

► oxide

· The new standards cut emissions of carbon monoxide, nitrogen oxides, gaseous hydrocarbons and particulate matter.· First, the nitrogen oxides are toxic to animals.· To avoid further damage to sensitive ecosystems, sulphur and nitrogen oxide emissions must be cut by 90 percent.· These same nitrogen oxides, in high but apparently plausible concentrations, will defoliate plants.· Nitrogen oxide Forty percent of nitrogen oxide emissions in Britain come from vehicles.· Global warming occurs when carbon dioxide and some other gases, such as methane and nitrogen oxides, accumulate in the atmosphere.· The situation is exacerbated by unusually low levels of nitrogen oxides, which inhibit ozone destruction.· Large explosions heat vast masses of the atmosphere to such high temperatures that nitrogen is partially burned to make toxic nitrogen oxides.

VERB► freeze

· The specimens were weighed immediately, frozen in liquid nitrogen, and stored at -80°C.· This test was used to ensure a 100% death rate of cells frozen in liquid nitrogen.· The specimens were frozen immediately in liquid nitrogen and subjected to autofluorescence microscopy.

► reduce

· The nitrogenous materials which have been oxidized aerobically to nitrate are then reduced anaerobically to nitrogen.

单词	nitrogen
释义	nitrogenni‧tro‧gen /ˈnaɪtrədʒən/ ●●○ noun [uncountable] Word Origin WORD ORIGINnitrogen Origin: 1700-1800 French nitrogène, from nitre ( ➔ NITIC ACID) + -gène ‘producing’ Examples EXAMPLES FROM THE CORPUS Aerozine 50 was used as the fuel, with nitrogen tetroxide as the oxidizer. Both countries would also limit nitrogen oxide emissions through stricter controls on motor vehicles. But close examination showed that species intolerant of acid conditions or high nitrogen levels were not reappearing. Global warming occurs when carbon dioxide and some other gases, such as methane and nitrogen oxides, accumulate in the atmosphere. Large explosions heat vast masses of the atmosphere to such high temperatures that nitrogen is partially burned to make toxic nitrogen oxides. On reflection, I think we made the nitrogen bands rather too wide. Peas and beans put nitrogen into the soil. The very low abundances of volatiles and especially the low nitrogen abundance all pose special problems. word sets WORD SETS► Elements aluminium, nounargon, nounarsenic, nounbarium, nounbase metal, nounbismuth, nouncadmium, nouncaesium, nouncalcium, nouncarbon, nounchlorine, nounchromium, nouncobalt, nouncopper, nounferrous, adjectivegold, noungold, adjectivegolden, adjectivehalogen, nounhydro-, prefixhydrogen, nouniodine, nouniridium, nouniron, nounisotope, nounkrypton, nounlead, nounlithium, nounmagnesium, nounmanganese, nounmercury, nounmolybdenum, nounnickel, nounnitrogen, nounoxygen, nounphosphorus, nounplatinum, nounplutonium, nounpotassium, nounprecious metal, nounradium, nounradon, nounselenium, nounsilicon, nounsilver, nounsilver, adjectivesodium, nounstrontium, nountin, nountin, adjectivetitanium, nountrace element, nountungsten, nounuranium, nounxenon, nounzinc, noun Collocations COLLOCATIONS FROM OTHER ENTRIES► a carbon/nitrogen/sulphur etc compound · Use a copper compound to protect the trees from pests. COLLOCATIONS FROM THE CORPUSADJECTIVE► liquid · The specimens were weighed immediately, frozen in liquid nitrogen, and stored at -80°C.· The ceramics -- cables encased in a sheath of liquid nitrogen -- are being developed for power generation and other machinery applications.· In addition, it would consume liquid nitrogen for cooling purposes at approximately £20 per trip.· The tissue was then snap-frozen by immersion in liquid nitrogen before storage at -70°C for up to six months.· At both operations, biopsies from the tumour and non-tumour liver tissue were collected and snap frozen in liquid nitrogen.· After immersion in 40% glycerin solution at room temperature, they were placed on a copper stage and frozen with liquid nitrogen.· This test was used to ensure a 100% death rate of cells frozen in liquid nitrogen.· The specimens were frozen immediately in liquid nitrogen and subjected to autofluorescence microscopy. NOUN► dioxide · It is usually caused by the emission of particulates or nitrogen dioxide.· The sulphur dioxide level in Belfast was 32 parts per billion while the nitrogen dioxide level was 48.· The southern California air basin is the only area in the country that still fails to meet the nitrogen dioxide standard.· The gas is cleaned prior to burning and the sulphur dioxide and nitrogen dioxide, thought to contribute to acid rain, removed.· However, this statistic conceals that levels of nitrogen dioxide have changed little since 1983.· Of those figures, Britain contributed 1.84 million tonnes of sulphur and an equal amount of nitrogen dioxide.· Apart from general operating conditions, it has set emission limits for sulphur dioxide, nitrogen dioxide and carbon monoxide. ► fixation · What are the prospects for nitrogen fixation in plants? ► gas · Around half of the nitrogen in the burnt biomass may be released as nitrogen gas.· It was inflated with nitrogen gas within minutes and looked like a silver parachute.· Four-fifths of the modern atmosphere consists of nitrogen gas.· Bacteria then work on the nitrates converting them firstly to nitrous oxide and then to free nitrogen gas. ► oxide · The new standards cut emissions of carbon monoxide, nitrogen oxides, gaseous hydrocarbons and particulate matter.· First, the nitrogen oxides are toxic to animals.· To avoid further damage to sensitive ecosystems, sulphur and nitrogen oxide emissions must be cut by 90 percent.· These same nitrogen oxides, in high but apparently plausible concentrations, will defoliate plants.· Nitrogen oxide Forty percent of nitrogen oxide emissions in Britain come from vehicles.· Global warming occurs when carbon dioxide and some other gases, such as methane and nitrogen oxides, accumulate in the atmosphere.· The situation is exacerbated by unusually low levels of nitrogen oxides, which inhibit ozone destruction.· Large explosions heat vast masses of the atmosphere to such high temperatures that nitrogen is partially burned to make toxic nitrogen oxides. VERB► freeze · The specimens were weighed immediately, frozen in liquid nitrogen, and stored at -80°C.· This test was used to ensure a 100% death rate of cells frozen in liquid nitrogen.· The specimens were frozen immediately in liquid nitrogen and subjected to autofluorescence microscopy. ► reduce · The nitrogenous materials which have been oxidized aerobically to nitrate are then reduced anaerobically to nitrogen. a gas that has no colour or smell, and that forms most of the Earth’s air. It is a chemical element: symbol N
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