英语词汇nitrogen的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

词汇	nitrogen
词根词缀	词源： 1794, from Fr. nitrogène, coined 1790 by Fr. chemist Jean Antoine Chaptal (1756-1832), from comb. form of Gk. nitron "sodium carbonate" (from Egyptian ntr) + Fr. gène "producing." The gas was discovered in analysis of nitric acid. Earlier name (1772) was mephitic air. The word nitre was in use in late M.E. for "potassium nitrate, saltpetre" (c.1400). 词根记忆： n. [化]氮The nitrogen atoms combine instantaneously, simultaneously and spontaneously.氮原子瞬间同时自动化合.
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