Of three nitrogen fertilizer types, the amide-form nitrogen source was better to the formation and accumulation of gliadin as well as its four fractions.

比较而言，酰胺态氮素更有利于醇溶蛋白及各组分的形成与积累。

youdao

The three most important nutrient recycles are the nitrogen cycle, the carbon cycle and the one we are going to talk about today, the Phosphorus cycle.

这三种最重要的营养循环包括氮循环、碳循环和我们今天要讲的磷循环。

youdao

The pair considered three aspects of global livestock production: greenhouse gas emissions, biomass consumption and nitrogen emissions.

两位研究人员考虑了全球畜牧业生产的三个方面：温室气体排放，生物质消耗和氮排放。

youdao

Scientists at the agroforestry center say the use of fertilizer trees can reduce the need for chemical nitrogen by up to three-fourths.

VOA: special.2009.09.01

If we take nitrogen, we've got N2, and we've got one, two, three, four, five.

比如说氮，我们得到了氮气，我们有一个，两个，三个，四个，五个。

麻省理工公开课 - 固态化学导论课程节选

Here is the second nitrogen, one, two, three, four, five.

这是第二个氮，一二三四五。

麻省理工公开课 - 固态化学导论课程节选

Three-quarters of the company's sales are of nitrogen fertilizers, and it has a big position in domestic production, with two of the three largest nitrogen fertilizer plants in North America.

FORBES: Redolent

The chemical, one part nitrogen to three parts hydrogen, stores a lot of energy: a gallon of it has about half the Btus as a gallon of diesel.

FORBES: Peak Oil Solution: The Simmons Plan

Engineers said they were considering also injecting nitrogen into the number two and three reactors.

BBC: Japan quake: Nitrogen pumped into nuclear reactor