Some areas, though rich in these nitrogen compounds, have few plankton.
有些地区虽然富含氮化合物，但浮游生物却很少。
Plankton generally thrive in areas of the ocean with sufficient concentrations of certain nitrogen compounds near the surface, where plankton live.
浮游生物通常在海洋表面附近某些含氮化合物浓度足够高的区域大量繁殖，而海洋表面正是浮游生物生存的地方。
Heterotrophic bacteria eat most of the carbon-based materials in raw sewage while autotrophic bacteria consume ammonia and nitrogen compounds.
异养细菌可以吃掉未处理污水当中的大部分碳基物质；而自养细菌则会消耗掉氨氮化合物。
The fungus, recently discovered in Iran, grows naturally in crude oil and removes the sulphur and nitrogen compounds that lead to acid rain and air pollution.
最近，在伊朗发现了一种在原油中自然生长的真菌，可清除石油中导致酸雨和空气污染的硫氮化合物。
Pot culture experiments were conducted to study the effect of molybdenum on the inorganic nitrogen compounds of winter wheat.
采用盆栽试验，研究了钼营养对冬小麦无机氮组分的影响。
The basic nitrogen compounds include pyridines and quinolines.
碱性氮化物包括吡啶和喹啉。
In this case the most important are nitrogen compounds, then follow compounds of oxygen and sulfur.
在这种情况下最重要的是氮化物，其次才是氧化物和硫化物。
The distribution of basic nitrogen compounds in FCC gasoline have no change during sweetening process.
脱臭前后FCC汽油中碱性氮化物种类和分布基本没有变化。
A comprehensive review of the studies on soil organic nitrogen compounds and the types of its mineralizable models is presented.
就目前土壤有机氮组分方面的研究情况作一简要综述，探讨土壤有机氮矿化模型类型，以及今后其模型研究的方向。
Water extraction is an economical and effective method that is applied to remove basic nitrogen compounds in FCC light gasoline.
水萃取法是脱除催化裂化轻汽油中碱性氮化物的经济有效的方法。
The nitrogen compounds were very important pollutant in the wastewater and landfill leachate, of which ammonia was the major pollutant.
在污水和固体垃圾废弃物填埋的渗滤液中，氮源是一个非常重要的污染源，而氨氮又是氮源里面最主要的污染物。
It is a novel studied field in organic geochemistry using amount and distribution of nitrogen compounds in crude oils to study petroleum migration.
应用石油含氮化合物分布研究石油运移是目前国内外有机地球化学研究领域的一个新方向。
The wastewater of hexanolactam (nylon) fiber production in Shijiazhuang Synthetic Fiber manufactory is high concentrated with organic nitrogen compounds.
己内酰胺锦纶化纤废水属于高含氮高浓度有机废水。
This article has presented a modified molecular connectivity indices used in the QSARs research of the aqueous solubilities of heterocyclic nitrogen compounds.
本文采用一种修正的分子连接性指数研究了氮杂环类化合物水溶解度的定量结构性质关系。
In heavy oil, not only the absolute concentrations but also the ratio indicators of neutral nitrogen compounds are too low to distinguish the oil migration path.
重质油中，无论是中性含氮化合物的绝对浓度或是其比值指标都降低，严重影响了原油运移途径的判别。
Yellow water contains large amount of nitrogen compounds, reducing sugar, alcohols, aldehyde, acids, esters, flavoring substances and some beneficial microflora.
黄水中含有大量的含氮化合物、 还原糖及醇、醛、酸、酯等香味物质以及有益微生物菌群。
A new stabilization additive was studied, it has good effect to improve the color change and sediments formation of FCC diesel fuel containing non-basic nitrogen compounds.
新研制的柴油安定性添加剂对抑制由非碱性化合物引起的催化裂化柴油的颜色变深和沉渣生成有较好的效果。
Industrially, ammonia is the starting material for most other nitrogen compounds (especially nitrates and nitrites), whose main USES are in agricultural fertilizers and explosives.
氨是其它氮化合物(尤其是硝酸盐和亚硝酸盐)的起始物质，这些化合物主要用于农业肥料和炸药。
All these showed that the intensity of carbon and nitrogen metabolism strengthened in root system because massive carbon and nitrogen compounds transported to root system after topping.
由上可知，打顶后大量的含碳、氮化合物运输到根系中，根系中碳氮代谢强度增大。
With the increasing of oil migration effects, the concentration of nitrogen compounds decreased whereas the ratios of shielded nitrogen compounds to exposed or semi-shielded ones increased.
随着运移作用的加强，含氮化合物绝对浓度下降，“屏蔽”型与“暴露”型或“半屏蔽”型化合物的比值增加。
The influences of different composition of refined solvent, ratio of reagent to oil, temperature and time of extraction, time of setting on removal of basic nitrogen compounds were studied.
考察了精制溶剂组成、剂油比、精制温度、反应时间及静置时间对脱碱氮的影响。
Carbazole compounds were fractionated and detected in oils from the Central Tarim district, Tarim Basin, and these nitrogen compounds were utilized for research work of oil migration successfully.
在塔里木盆地塔中地区的原油中分离和检测到咔唑类含氮化合物，并成功地将其应用于油气运移研究。
A process for the removal of basic nitrogen compounds from light gasoline by extraction is studied. The effects of extraction conditions on the removal of basic nitrogen compounds are investigated.
通过研究萃取法脱除催化裂化轻汽油中能使醚化催化剂失活的碱性氮化物的工艺，考察了各种工艺条件对碱性氮脱除率的影响。
The etherification process of FCC light gasoline meets the requirement of producing clean gasoline, while the basic nitrogen compounds can deactivate the etherification catalyst-sulfonic acid resin.
催化裂化轻汽油醚化工艺适应了生产清洁汽油的要求，轻汽油中含有的少量碱性氮化物中和阳离子交换树脂催化剂的酸性，造成催化剂失活。
Nitrogen compounds, like urea, a big component of urine, are transformed over several steps.
含氮化合物如尿的主要组成成分尿素则经过几步被转化。
Nitrogen compounds, like urea, a big component of urine, are transformed over several steps.
含氮化合物如尿的主要组成成分尿素则经过几步被转化。
应用推荐