| 词汇 | hydrocarbon |
| 释义 | hydrocarbon noun[ C ] uk /ˌhaɪ.drəʊˈkɑː.bən/ us /ˌhaɪ.droʊˈkɑːr.bən/ a chemical combination of hydrogen and carbon, such as in oil or petrol: 烃，碳氢化合物 hydrocarbon emissions碳氢化合物的排放 Chemistry: types of chemical acid salt aerogel albumin alkali metal alkaline alkaloid antioxidant carbohydrate homologous series inorganic isopropanol ketone lectin melamine monosaccharide mothball propellant saline soluble weak base hydrocarbon | American Dictionaryhydrocarbon noun[ C ] us/ˌhɑɪ·drəˈkɑr·bən/ biology, chemistry a chemical combination of hydrogen (= a gas) and carbon (= a chemical element that is in all animals and plants), found in fuels hydrocarbon | Business Englishhydrocarbon noun[ C ] uk /ˌhaɪdrəʊˈkɑːbən/us ENVIRONMENT a chemical combination of hydrogen and carbon, such as in oil or petrol: Hydrocarbon and carbon monoxide emissions from automobiles. Examples of hydrocarbonhydrocarbon The stoichiometry of the exact reaction will depend on the nature of the organic matter involved, here assumed to be saturated aliphatic hydrocarbon. There is a need to understand the fate and behaviour of hydrocarbon contaminants in these extreme systems. The total quantity of hydrocarbons (sum of single hydrocarbon quantity) is expressed here as quantity of hydrocarbons in ng/mg of insect. The proportions of these hydrocarbons increased in extracts of parasitized honey bees. The highest increase among relative proportions of hydrocarbons was observed with unsaturated hydrocarbons (around 15 % versus 9 %). Maturation of the organic matter in the vicinity of the intrusion can lead to the generation of liquid hydrocarbons. Nevertheless, the effect of evaporation and other natural degradation processes through the years might have contributed to lower hydrocarbon concentrations. There is a significant reduction in hydrocarbon concentrations in sediments as the distance from the assumed hydrocarbon sources (contaminated sites located uphill) increases. Table 1 shows the hydrocarbon quantities given as the mean nanograms per fly of each compound or mixture from the two peaks of interest. Parasites, if they possess quantities of epicuticular hydrocarbons near the threshold level necessary to be perceived by hosts, could be more tolerated by hosts. No qualitative differences in the hydrocarbon profiles was observed with regard to gender though preliminary results showed that quantitative differences were clearly present. Issues and problems relating to fishing, hydrocarbon exploration, tourism and communications clearly spill over national borders (regardless of whether those borders are actually contested). It was postulated that the movement of water through hydrocarbon-contaminated sediments would result in the dispersal of hydrocarbon-contaminated meltwater downhill towards the sea. However, hydrocarbon (toluene) emissions were more than 250% higher than total hydrocarbon emissions from other sources on station. It will be less useful for those working on oceanic lithosphere, hydrocarbon geology or mineralization processes. 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. Collocations withhydrocarbonhydrocarbonThese are words often used in combination with hydrocarbon. Click on a collocation to see more examples of it. chlorinated hydrocarbon Many commentators have implicated lindane, a chlorinatedhydrocarbon poison present in our environment, in the incidence of breast cancer. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 hydrocarbon fuel I believe that that is almost too low a percentage in a world where our hydrocarbon fuel supplies are always at risk. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 hydrocarbon molecule As a result, its surface spontaneously attaches water and hydrocarbon molecules from the ambient atmosphere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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. See all collocations with hydrocarbon |
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