| 释义 | 
		Definition of nitrogen fixation in English: nitrogen fixationnoun mass nounBiology The chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle.  Example sentencesExamples -  In addition, when Cuscuta parasitises Lupinus albus, atmospheric nitrogen fixation by the nitrogen-fixing host is severely depressed.
 -  Legumes, such as soybean, are able to capture atmospheric nitrogen and utilize it through the process of nitrogen fixation.
 -  Thus, we can see that nitrogen fixation is a unique process in which the soybean plant and bacteria work closely together throughout the season.
 -  It does this by integrating natural processes such as nutrient cycling, nitrogen fixation, soil regeneration and natural enemies of pests into food production processes.
 -  Plastids perform essential cellular functions and harbour a complex biosynthetic machinery for nitrogen fixation, amino acid biosynthesis, sulphur metabolism, isoprenoid biosynthesis, and gene expression.
 
    Definition of nitrogen fixation in US English: nitrogen fixationnoun Biology The chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle.  Example sentencesExamples -  Plastids perform essential cellular functions and harbour a complex biosynthetic machinery for nitrogen fixation, amino acid biosynthesis, sulphur metabolism, isoprenoid biosynthesis, and gene expression.
 -  It does this by integrating natural processes such as nutrient cycling, nitrogen fixation, soil regeneration and natural enemies of pests into food production processes.
 -  Legumes, such as soybean, are able to capture atmospheric nitrogen and utilize it through the process of nitrogen fixation.
 -  Thus, we can see that nitrogen fixation is a unique process in which the soybean plant and bacteria work closely together throughout the season.
 -  In addition, when Cuscuta parasitises Lupinus albus, atmospheric nitrogen fixation by the nitrogen-fixing host is severely depressed.
 
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