Because of the importance of nutrients and their scarcity, nutrient recycling is one of the most significant eco-system processes that we'll cover in this course.
由于养分的重要性和贫乏性，营养循环是我们在这门课中会讲到的最重要的生态系统过程之一。
Those are also symptoms of a deficiency of B-12, a key nutrient needed to make red blood cells and DNA and keep the nervous system working right.
这也是维生素b - 12缺乏的症状，B - 12是合成红细胞和DNA、维持神经系统正常运转的不可或缺的营养物质。
One of the most essential nutrients for a better night's sleep is definitely Vitamin B6. This nutrient helps fight stress and relax your nervous system.
晚上良好的睡眠所需的最重要的营养成分之一当然就是维他命b6。这一营养可以帮助抵抗压力，放松你的神经系统。
The transportation and transformation of 14 C phenanthrene in a closed 'plant lava nutrient solution air' chamber system was studied by using radioactivity technology.
利用放射性同位素示踪技术，研究14C菲在“植物火山石营养液空气”封闭系统中的迁移转化。
Due to the increase in nutrient input of the ecosystem and the decrease in the nutrient output from soil and water loss, the nutrients in the system are surplus.
由于间种山毛豆增加了生态系统的养分收入，减少了水土流失的养分支出，系统的各种养分出现了盈余的状况。
There are living bacteria and inorganic and organic nutrient substances of high load in the circulating cooling water system where wastewater is recycled.
污水回用于循环冷却水系统，水质中会含有存活的细菌，并且无机和有机营养物含量高。
The delay nutrient recycling is considered in the models of competition in a chemostat with an external inhibitor, the sufficient conditions of bounded in the system is obtained.
在具有抑制剂的恒化器竞争模型中考虑时滞营养循环的作用，得到系统有界的充分条件。
By using soil nutrient state system study method, balancing soil fertilization have been adopted after the soil nutrient limitation factors had been made clear.
采用土壤养分状况系统研究法。在摸清土壤养分限制因子前提下，平衡施肥。
A field experiment was conducted to study the nutrient balance and economic benefit on winter-wheat and rice system with mid-stage effluent of ammonium sulfite method irrigation.
通过田间实验，研究亚铵法制浆中段水经土地处理的同时作为灌溉用水的农田养分平衡状况及经济效益。
The nutrient availability, microbe number and enzyme activity of rhizosphere soil in the intercropping system are significantly higher than those in the single culture.
与单作相比，间作体系中的玉米、大豆根际土壤养分有效性、根际土壤微生物数量、根际土壤酶活性均显著高于相应单作根际土壤。
The nutrient balance method was mainly researched on maize fertilizer in the old researches, and most of them stay the level of theory and mechanism without concrete, timely and system research.
在以往的研究中，主要是以养分平衡方法来开展对玉米施肥方面的研究，并多停留在理论与机理上的探讨，缺乏具体性、时效性与系统性的研究，没有更多地将新技术、新方法应用到研究中去。
The study of nitrogen balance in stock farming system is the basis of nutrient management in animal husbandry production, and the determination of N cycling parameters is the foundation of this study.
畜牧系统中N流动与平衡的研究是畜牧业进行养分资源管理的基础，而参数的确定又是研究养分循环与平衡的基础工作。
For example, Philips Design's 2011 Microbial Home is a cradle-to-cradle nutrient management system and includes a bio-digester for the anaerobic fermentation of food waste;
例如，飞利浦设计的2011种微生物的家——从摇篮到摇篮营养管理系统，包括用于餐厨垃圾厌氧发酵沼气池；
The nutrient salts in the system of sediment-porewater in inner Qinhuai river were studied.
采用现场采样及室内分析测试方法，研究了内秦淮河沉积物间隙水中营养盐状况。
In this paper, a method of judgement of the M-DRIS (Modified Diagnosis and Recommendation Integrated System) to the plenty and lack of crops nutrient has been introduced.
本文介绍了修改的综合诊断施肥法(M -DRIS)对作物养分丰缺的判定方法。
It is believed that all tree utilization and short rotation system were main factors responsible for nutrient depletion and productivity decline of the stand sites.
“全树利用”及其短轮伐期经营制度是导致林地养分衰竭和生产力下降的主要原因。
The system — called the nutrient Film Technique, or NFT — merely requires a slope, any-thing from near horizontal to vertical, with channels for dilute nutrient solution to flow down.
系统- - -认为营养的电影是技术，或NFT - - -只需要为稀释的营养解决一座倾斜，任何的-事物从近的水平线到垂直的，借由频道流动下来。
The system adopted the nutrient balance method of eucalypt which made this system more accurate in calculation and more valuable.
系统采用了养分平衡法和桉树的平衡施肥法计算施肥量，计算结果精确，具有可利用价值。
OBJECTIVE:To discuss the way to establish a scientific and rational quality guarantee system for total nutrient admixture(TNA).
目的：探讨建立科学、合理的全静脉营养液质量保证体系。
The system's non-biological and biological degradation mechanism for organic pollutants and nutrient elements was revealed through the simulation of integrated vertical flow infiltration system;
本研究通过对复合垂直流渗滤系统的模拟揭示了该系统非生物机制与生物机制对有机污染物、营养元素的降解效果。
The recovery capabilities of nutrient source to the abnormal yeast-wastewater treatment system were discussed in small-scale experiments.
初步探讨了营养源对异常酵母菌处理高含油废水系统的恢复能力。
By using the PROBE system, the root depths and water absorption modes of crops and soil qualities can be quickly analyzed exactly, the useless drainage and nutrient leaching etc. will be decreased.
PROBE系统还可用于快速、准确地分析作物的根系深度和吸水模式、土壤质地，减少无效排水、养分淋溶等。
The management, such as plough, fertilization and irrigation etc. have not only changed the nutrient cycling in the farmland ecosystem system, but also brought influences to global climate.
这些农田土壤的种植、翻耕、施肥、灌溉等管理措施不仅改变着农田生态系统中的化学元素循环，且给全球气候变化带来影响。
The quantity of crop nutrients transferred from the system, and the nutrient budget of N, P and K in soil were studied.
研究了在养分循环再利用的基础上采取不同施肥制度下作物养分移出量，并结合施肥量计算出土壤中N、P、K养分收支。
It extracts the nutrient solution from domestic sewage through the co-operation of solution-generating system, feeding system and cultivating system to success tray agriculture.
通过产液系统、供液系统及栽培系统的协同工作从生活污水中制取营养液在屋顶和壁上水栽培作物。
Vitamin D3 is an essential nutrient for bone and immune system health; its main source is sunshine, and it is synthesized through the skin.
维生素d 3对骨骼和免疫系统来说，是一个重要元素，主要来源是通过太阳光照，由皮肤合成。
Adventitious roots are vital for water and nutrient assimilation by cereal crops because they comprise the bulk of the fibrous root system.
不定根组成了禾本类作物的须根系，对水分和养分的吸收起着关键的作用。
The index is characterized by product of two functions of nutrient-N that is the most active factor in the system.
该指数是以系统内最活跃的因素养分N的两个函数乘积来表征。
The index is characterized by product of two functions of nutrient-N that is the most active factor in the system.
该指数是以系统内最活跃的因素养分N的两个函数乘积来表征。
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