They then calculated the eutrophication potential of each food group and compared these farm-to-table nitrogen footprints to carbon footprints, using data from a well-known 2008 study Environ. Sci.

然后，他们计算了每组食品的潜在富营养化状态，用2008年一项著名研究的数据，对这些食物从农场到餐桌的氮足迹与碳足迹加以比较(环境。科学。技术。，2008,42,3508)。

youdao

There was no obvious changes of urea nitrogen content in each group (P > 0.05).

各实验组小鼠的尿素氮含量未见明显变化（P>0.05）。

youdao

Nitramines are substances which contain a nitro group bonded to nitrogen .

含有与氮原子相连的硝基的物质称为硝胺。

youdao

All of these from the group one and two through the group five and six elements, but what about elements, what about molecules like hydrogen, or nitrogen, or maybe oxygen?

所有的这些都是来自于第一主族和第二组主族,到第五主族和第六组主族的悬殊，那么元素呢，比如氢气，氮气或氧气那样的分子呢？

麻省理工公开课 - 固态化学导论课程节选

Eugenol, a methoxyphenol found in various essential oils such as clove, bay laurel, cinnamon leaf, and rosemary, appears to be a particulary effective peorxynitrites scavenger (the methyl group binds to peroxynitrites and the phenol group converts it into water and a nitrogen dioxide anion).

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