氮
nitrogen; nitrogen gas
Meanings
2 senses · 10 examplesnoun
nitrogen (chemical element)
formalBasic chemical term, used in chemistry, agriculture and environmental science.
Nitrogen is the most abundant gas in the Earth's atmosphere.
Nitrogen has very inactive chemical properties and rarely reacts with other substances at room temperature.
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Nitrogen fertilizer can provide essential nitrogen for plants.
Laboratories often use nitrogen to fill protective gas bags.
Nitrogen is one of the core raw materials for manufacturing nitric acid.
noun
nitrogen gas
neutralRefers specifically to the gaseous form of the nitrogen element in daily and industrial contexts.
This type of light bulb is filled with dry nitrogen to extend its service life.
Food packaging often fills nitrogen to prevent food from spoiling.
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Liquid nitrogen is nitrogen in liquid form with extremely low temperature.
Industrially, nitrogen is obtained by separating liquid air.
Nitrogen can be used to store easily oxidizable precision instruments.