| 词汇 | acetylene |
| 释义 | acetylene noun[ U ] uk /əˈset.ə.liːn/ us /əˈset̬.ə.liːn/ a gas with a strong smell that burns with a very hot, bright flame, used in cutting and joining metal乙炔，电石气 Chemicals, chemical compounds & gases acetic acid acetone acrolein acrylamide activated charcoal adenine agglomerate ethyl alcohol glyphosate H2O HCFC HFC hyaluronic acid hydrochloric acid laughing gas limescale meths oxyacetylene prussic acid tartaric acid Examples of acetyleneacetylene Under water and acid hydrolysis copper acetylide produces essentially acetylene. Samples assayed for nitrogenase activity by acetylene reduction indicated that nitrogenase activity occurred in the dark. Even the possibility of methanogenic life consuming acetylene and hydrogen or silane-based life in hydrocarbon lakes has been speculated. Localization of nitrogenase activity as assayed by acetylene reduction. The gas phase in the syringe was replaced with acetylene (10% v/v) and the syringe was incubated for 25 mins. The chemical synthesis begins with the formation of acetylene, the first building block of benzene, in carbon stars. The acetylene reduction assay for measuring nitrogen fixation in waterlogged soil. Overturning may drive suspension and redistribution of solid acetylene on the lake bottom. Studies on the photolysis of acetylene and diacetylene have also been reported. The acetylene reduction method for measuring nitrogenase activity. Rates of nitrogen fixation were determined using the acetylene reduction method. After measuring the acetylene reduction, the soil cores were air-dried in the shade and the dry weights recorded. Controls were run with no acetylene. Functionalized acetylenes in organic synthesis. Alternatively, acetylene may yield amino acids directly via a conversion of an alkyne to the corresponding aldehyde, which then forms an alpha amino nitrile and eventually an amino acid. 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. |
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