查询词典 nitrogen cycle

In this paper, the importance of denitrification in the biogeochemical cycle of nitrogen in estuaries is summarized, It introduces methods of denitrification determination, as well as their advantages and disadvantages.

本文综述了河口区域反硝化作用在N元素生物地球化学循环过程中的重要作用，概述了不同测定反硝化速率的方法，并提出了各种方法的优缺点。总结了反硝化作用的影响因素：O2浓度，NO3，有机质，温度，生物等。

The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements.

近20年由於「气相同位素比值质谱仪」的改良和氢、氧、碳、氮和硫等稳定同位素的广泛研究，稳定同位素的研究技术已实质增加我们对於这些元素在自然生態系中生地化循环的瞭解。

Chinese fir plantation ; biogeochemical cycle ; nitrogen deposition ; seasonal dynamics

杉木人工林；生物地球化学循环；氮素沉降；季节动态

In the main response to the region in accordance with the "aeration, idle, precipitation, drainage" cycle of operation procedures, so that sewage in the "aerobic - hypoxia," repeatedly in the carbon to complete, from Nitrogen, and the "aerobic - anaerobic" repeatedly in the completion of phosphorus.

在主反应区内依照"曝气、闲置、沉淀、排水"程序周期运行，使污水在"好氧-缺氧"的反复中完成去碳、脱氮，和在"好氧-厌氧"的反复中完成除磷。

And analyzed the equivalent curing of tire using steam and nitrogen gas duringthe cycle and put forward the relative curing condition.

对轮胎蒸汽/氮气硫化过程的等效硫化问题进行了分析研究，提出了相应的硫化条件。

The Benson-Calvin cycle is restricted to the BS cells, minimizing photorespiration and allowing increased carbon, nitrogen, and water use efficiency.

在本森，卡尔文循环的限制细胞的学士学位，尽量减少光呼吸和使更多的碳，氮和水的使用效率。

Sources equipment checks : cold water, vacuum, compressed air, ventilation, nitrogen system; 2 Second, production of electrical equipment checks : Mixing, thermometers, pressure gauge, safety valve and the water supply valve and pipe materials Absorption normal; 3 ③ measurement and control system for communications; Facilities and environmental monitoring system checks; 1.3 production plans and arrange the production cycle length ahead of the relevant staff work schedules.

哪位高手能给翻译一下？①动力源设备检查：冷热水、真空、压缩空气、通风、氮气等系统；②生产设备检查：搅拌电机、温度表、压力表、安全阀及供水和吸放料管道阀门是否正常；③计量和通讯控制系统检查；环保设施和监控系统检查； 1.3 人员安排：根据生产计划和产品生产长短周期提前安排好有关人员作息时间。

Effects of three levels of nitrogen nutrition on xanthophyll cycle and the antioxidant system in strawberry leaves growth in elevated CO2.(4) Response of Dl turnover to high light in strawberry leaves.

结果表明，Fm、Fv/Fm、PS Ⅱ无活性反应中心数量和Q_A的还原速率在强光下降低，在暗恢复时升高；而PS Ⅱ反应中心非还原性Q_B的比例在强光下增加，在暗恢复时降低。

Medicago truncatula has become a useful model plant for biology and genome of Legumes,since it has a small diploid genome(2×8),rapid reproductive cycle,autogamous fertilization,nitrogen-fixing,and ease of transformation.

由于蒺藜苜蓿具有高的遗传转化效率、生长期短、染色体组为2×8、基因组小、自花授粉、固氮等特点，使它成为豆科生物学和基因组学研究的模式植物。

Through comparison of energy inputs in corn fuel ethanol life cycle,fossil energy inputs of corn production and ethanol conversion processes were identified as the most important,and therefore nitrogen fertilizer,electivity and diesel used in corn farming and energy consumption of distillation and dehydration process in ethanol production could be known as the most influential factors for the energy benefit of corn fuel ethanol.

但是玉米燃料乙醇从原料的生产、乙醇的转化，一直到被燃耗的整个生命周期中的多个阶段需要直接或间接地消耗矿物能源，因而，虽然玉米燃料乙醇是可再生能源，然而是否具有可持续性及可持续性的大小则取决于其燃耗中所产生的能量与燃料乙醇整个生命周期中所消耗的能量相比是否有盈余及盈余的大小。20世纪70年代中期，玉米燃料乙醇的能量平衡问题研究首次在美国出现[2，3]，当时乙醇替代汽油的能量效益的有关研究指

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。