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-).
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.
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-).
双语例句
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.