查询词典 nutrients

Arbuscular mycorrhizal symbiosis is the mutualistic association between AM fungi and most terrestrial plants: the plant roots offer carbohydrates to the fungi; in return, the fungi assist the plants with uptake of mineral nutrients, particularly phosphate, from soil, and their subsequent transfer to the root cortical cells.

南京农业大学资源与环境科学学院，南京 210095摘要丛枝菌根(arbuscular mycorrhizal， AM)共生是丛枝菌根真菌与大多数陆地植物的根系之间形成的一种互利共生关系。植物给菌根真菌提供碳水化合物；作为回报，菌根真菌能够增强植物对矿质营养元素的吸收。

For instance, when nutrients run low, individual myxobacteria may come together to form a fruiting body to produce spores.

例如，当营养缺少时，个体粘丝菌可能会聚集起来形成一个果状体来生产孢子。

For instance, when nutrients run low, individual myxobacteria may come together to form a fruiting body to produce spores.

最终，人们很早就认识到的同物种个体之间通过竞争去生产后代——性选择——对一些会削弱一个物种整体适应力的特征有利。

According to the above study result, the diversity of microorganisms population in the SUFR system is complex and the bio-community formed in the SUFR system is stable. The close relations between abundance of bacteria and nutrients were found. The correlation between heterotrophic bacteria and COD was 0.949. The correlation between organic phosphate bacteria and TP was 0.815. The correlation between nitrosobacteria and NH3-N was 0.909. The correlation between disnitrifier bacteria and TN was 0.653. These inneglectable great factors effecting on phosphorus-uptake and phosphorus-release of phosphorus accumulating organisms are the influent COD、the concentration of DO、the sludge retention time、the temperature. The diversity of organic phosphate bacteria population in the SUFR reactor was complex and there is no phosphate bacteria taking the absolute superiority in quantity. The near-native pure culture method powerfully complement the traditional pure culture technique and enrich culture technique. The sludgy bioactivity is very good in whole SUFR reactor. By the quality of being biochemistry, the anaerobic phase is higher than anoxic phase and the anoxic phase is higher than aerobic phase of SUFR.

通过以上试验内容研究发现，SUFR 系统中的微型动物种群较多，微生物生态系统稳定；系统中微生物的数量与营养盐的含量密切相关，其中总异养菌与COD的相关系数r 为0.949，有机磷细菌与TP 的相关系数r 为0.815，亚硝化菌与NH4+-N的相关系数r 为0.909，反硝化菌的数量和TN 的相关系数r 为0.653；污水生物除磷工艺中进水COD 的浓度、DO 浓度、泥龄的长短、温度都是影响聚磷菌释磷及吸磷效果的不可忽视的因素；SUFR 系统中的磷细菌呈现种群多样化的趋势，没有占绝对优势数量的磷细菌；微孔滤膜近自然培养法是对传统纯培养技术和富集培养技术的有力补充；整个SUFR 反应器系统中污泥的生物活性很好，就可生化性来讲，厌氧反应器大于缺氧反应器大于好氧反应器；按照动力学方程式求出的细胞生长动力学特征值和SUFR 脱氮除磷系统工艺的实测值结果基本吻合。

One reason is that some lees well-known nutrients and some nonnutrient food components could be important to health;some foods may be better sources of these than others .another reason is that monotonous diet may deliver large amounts of toxins or contaminants .each such undesirable item in a food is diluted by all the other foods eaten again.

原因有以下几点：其一是有的鲜为人知的营养素或非营养素成份实际上对健康及其重要。一些食物可能比其他食品含有相对较多的此类物质。另一个原因是单一的膳食可能含有大量的毒素或者污染物质。每一种食物中含有的不必要的成分可以被搭配的其他食品稀释，如果这种食品要几天后才再吃，那就会被进一步稀释。

The two experiment were carried out to study effect of ratio of structural and nonstructural carbohydrates in diets on digestion and metabolism of nutrients as well as rumen metabolic parameters for sheep.

为研究饲粮中结构与非结构性碳水化合物比例对绵羊营养物质消化代谢和瘤胃代谢参数的影响，进行了两个试验。

A chronic disorder that occurs in tropical and nontropical forms and in both children and adults; nutrients are not absorbed; symptoms include foul-smelling diarrhea and ''.

在热带出现的一种慢性紊乱症；儿童和成人都可能患染。

The nutrimental level in the Niyu Island and the Sanpan Island are the highest, because the inorganic nitrogen in the waters is too high. The resuits also showed that the eutrophication and nutrients species in the seawater are.

结果表明，丰水期水体中营养盐含量明显高于平水期，霓屿海域和三盘港海域富营养化最为严重，无机氮是水质富营养化的主要因素。

A newly formed lake generally has a small supply of plant nutrients and is call an oligotrophic lake (Figure 5-30,left).

新成立的湖泊通常有一个小型的植物供应养分，是一个寡湖（图5-30，左）。

But over time,sediment,organic material,and inorganic nutrients wash into most oligotrophic lakes,and plants grow and decompose to form bottom sediments.

但是随著时间的推移，沉积物，有机材料，无机养分流过最营养不良的湖泊，植物生长和分解，形成淤泥。

He's a pretty westernised kind of guy.

他是一个非常西化的人。

National spirit is the moral kingpin for a nation to realize common ideal and goal.

一、中华民族精神的基本内涵党的十六大报告指出：在五千多年的发展中，中华民族形成了以爱国主义为核心的团结统一、爱好和平、勤劳勇敢、自强不息的伟大民族精神。