搜尋結果
nitrogen
- IPA[ˈnītrəj(ə)n]
美式
- the chemical element of atomic number 7, a colorless, odorless unreactive gas that forms about 78 percent of the earth's atmosphere. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant.
noun: nitrogen