• 1. nitrogen element: 氮元素 | 氮素
• 2. nitrogen group element: 氮族元素
• 3. Nitrogen element of soil: 土壤氮元素

更多释义

• 1.XPS data reveal that the state and the content of nitrogen element in the surface layers correlate fairly with the catalytic activity.
  XPS实验结果证明活性炭表面氮元素的电子结构及含量对催化氧化活性有显著的影响。
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• 2.The principles of assimilation and accumulation of nitrogen element based on different fertilization levels and planting densities was researched.
  研究了不同密度和施肥水平下的水稻氮素吸收和积累的规律。
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• 3.During the combustion process of coal, the nitrogen element in coal may turn to various oxides of nitrogen, thereby, resulting in ambient pollution.
  煤中氮元素在煤燃烧过程中会转化为各种氮的氧化物，从而造成环境污染。
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