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。
The basic nitrogen compounds include pyridines and quinolines.
碱性氮化物包括吡啶和喹啉。
The halogen atoms play the same scavenging role as nitrogen compounds.
卤素原子同氮化合物一样，作为净化剂。
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。
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。
Preferred cationic sequestrants are quaternary nitrogen compounds including medium or long chain alkyl groups.
首选季铵盐阳离子螯合剂的氮化合物，包括中型或长链烷基。
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。
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。
The results show that the removal of nitrogen compounds by TiCl 4 complexing is about 80%, and 90% for that of basic nitrogen compounds.
结果表明：四氯化钛对总氮的脱除率为80％左右，碱氮的脱除率可达90％以上； 二氯化铜对碱性含氮化合物的络合具有较高的选择性；
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。
In this paper, the genesis, distribution, group composition, shortcomings of nitrogen compounds in the crude oil and the products were discussed.
介绍了石油及产品中氮化合物的起源、分布、分类、危害及各类氮化物的浓缩、分离、鉴定的各种方法。
The dynamic oxygen uptake tester was used for studying the influence of nitrogen compounds on oxidation characteristics of saturated hydrocarbons.
用动态循环吸氧的方法研究了吲哚和喹啉对饱和烃氧化特征的影响；
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。
Some solid-phase supporters used for solid-phase synthesis in supporter and the synthesis of multi-nitrogen compounds were introduced with 10 references.
介绍了在载体固相反应中常用的固相载体以及多氮化合物的载体固相合成。参考文献10篇。
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。
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。
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。
Furthermore, the oxidant is converted into an extractive solvent for removing oxidized sulfur and nitrogen compounds from the oxidized petroleum oils after oxidation step.
氧化后的氧化剂转化为萃取溶剂，以移出硫氧化物和氮氧化物，因此，没有废酸形成的困扰。
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。
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。
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