1794, from French nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756-1832), from comb. form of Greek nitron "sodium carbonate" (see nitro-) + French gène "producing," from Greek -gen "giving birth to" (see -gen). The gas was identified in part by analysis of nitre. Earlier name (1772) was mephitic air, and Lavoisier called it azote (see azo-).
实用例句
1. The atmosphere consist of more than 70 % of nitrogen.
大气中含有70%以上的氮气.
来自《简明英汉词典》
2. Every tonne of coal contains, on average, 30 kilograms of nitrogen.
每吨煤平均含30公斤氮.
来自《简明英汉词典》
3. The plant requires nitrogen in order to make proteins.
