查询词典 nitrogen cycle

Check out the nitrogen cycle page to learn more.

签出氮循环网页，了解更多。

We won't know until we better understand exactly how human activities are affecting the nitrogen cycle.

这些已经破坏了我们生存的环境了？

This imbalance in the global nitrogen cycle has led to uncontrolled nitrogenemissions into the atmosphere and water systems.

这种不平衡现象在全球氮循环，导致无节制氮气排放到大气和水系统。

The relative contribution of bacteria and archaea to ammonia oxidation is essential for our understanding of global nitrogen cycle.

氨氧化古菌和细菌对地球氨氧化过程的相对贡献率，是目前全球氮循环研究最重要的微生物生态学问题之一。

Live plants will help with the nitrogen cycle diminishing the amount of ammonia and nitrates in the aquarium.

活植物，将有助与氮循环减少的数额氨和硝酸盐的水族馆。

The NITROGEN CYCLE. Some of these cycles are regulated mainly by weathering.

这些循环中的一些是由物理因子调控的，例如磷循环的主要限制因素是通过岩石的侵蚀作用缓慢释放的磷酸盐。

The nitrogen cycle consists of several major steps.

氮循环由一些主要步骤组成。

What seems certain is that the nitrogen cycle is changing faster and more profoundly than the carbon cycle, which has attracted much more attention.

看起来有一点是肯定了，那就是，与碳循环相比氮循环改变越来越快，而且影响越来越深，这些已经引起了人们更多的关注。

Keywords: nitrogen cycle;heterotrophic ammonia oxidizing bacteria;bacillus;The metabolism of Carbon and Nitrogen

中文关键词：氮素循环；异养氨氧化细菌；芽孢杆菌；碳氮代谢

In this paper, the mechanism of nitrogen cycle was explored in the Yangtze River estuary. The results show that δ15N of SPM was in a wide range of 0.6‰ and 8.2‰, varying with seasons and geographic regions. The temporal and spatial variation reflected different influences of terrigenous inputs and nitrogen biogeochemical processing.

研究发现：该海域悬浮颗粒有机物的稳定氮同位素组成(δ15Np)分布范围较宽，在0.6‰～8.2‰之间，具有明显的时空分布特点，反映了不同程度的陆源输入和氮的生物地球化学过程的影响。

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。