氮循环的一个关键组成部分就是——在大气中，将纯净的氮固定为成含氮化合物的形式——这或多或少要完全依赖于生物(闪电仅起一点儿作用)。
One crucial part of this cycle-the fixing of pure nitrogen from the atmosphere into useful nitrogen-containing chemicals-depends more or less entirely on living things (lightning helps a bit).
与大多数蓝绿藻一样，念珠藻属含有两种色素，并有固定氮的能力。
Like most other cyanobacteria, nostocs contain two pigments and are capable of nitrogen fixation.
固定床自养反硝化去除地下水中的硝酸盐氮。
Nitrate nitrogen removal from ground water by autotrophic denitrification in a packed bed reactor.
固定床自养反硝化去除地下水中的硝酸盐氮。
Nitrate nitrogen removal from ground water by autotroph IC denitrification in a packed bed reactor.
氮的固定是由无氧环境的根瘤中的根瘤菌完成的。
Nitrogen fixation is carried out by the rhizobia in the anaerobic environment of the nodule.
通过把富集培养的硝化细菌单独固定化，进行了固定化用于焦化废水脱氮的可行性研究。
By immobilizing the enriched nitrobacteria separately, the feasibility of applying microorganism immobilization technology to the denitrification of coking wastewater is studied.
结果表明：影响煤粉NO静态排放量的四个主要因素依次为：碳含量、固定碳含量、氮含量、灰分含量。
Results show that four major influence factors of pulverized coals NO static emission amount are carbon content, fixed carbon content, nitrogen content and ash content respectively.
方法采用多孔陶粒作反硝化细菌固定化载体，研究下流式固定床生物反应器的适宜脱氮条件；
Methods Porous ceramics were used as immobilization carrier. Optimum conditions for nitrate-nitrogen removal of downflow fixed-bed bioreactor were studied.
不同比例因素制备的固定化硝化细菌小球去除氨氮的效率差别很大。
The efficiency of removing ammonium nitrogen from wastewater is different by immobilized nitrifying bacteria making with different ratio.
研究了在固定化脲酶催化作用下双醛纤维素对尿素氮的吸附平衡和动力学。
The adsorption of urea nitrogen onto dialdehyde cellulose (DAC) under catalysis of immobilized urease in gelatin (IU) was studied in batch system.
人工植被相对于天然植被对总氮的固定作用更为明显，而对总磷的固定作用劣于天然植被。
The fixation effect of total N in artificial vegetation was more obvious than that in natural vegetation, but it was converse on the fixation effect of total P.
藻类包埋固定化与附着固定化相比较，包埋固定化去除氮磷的效率更高，藻类更易收获。
Compared with attached algae system, embedded algae system has higher nutrient removal efficiency, and ingathering of algae is easier.
研究了固定化氮循环细菌抗高氮污染、有机质污染，抗逆境运行以及抗逆境运行后的恢复能力。
Resistance to pollution of nitrogen and organic matter, adversity resistant running of immobilized nitrogen cycling bacteria(INCB) and its recoverable ability after the function were studied.
虽然在地球表面每英亩空气柱中有34,500吨气态氮，但是如果这些气态氮不被固氮菌和藻类固定，是不能被植物利用的。
Although there is 34,500 tons of gaseous nitrogen in the air column above each acre of the earth's surface, this cannot be used by plants until it has been fixed by nitrogen-fixing bacteria and algae.
其中一些气体，如，氮，氧，氩，氖等，作为空气的永久组成成分，总是以固定的比例存在于大气中。
Some of them, such as nitrogen, oxygen, argon, neon, and so on, may be regarded as permanent atmospheric components that remain in fixed proportions to the total gas volume.
以Y型分子筛为载体，分别采用吸附法、吸附-戊二醛交联法、偶联法和偶联-重氮法4种方法对氨基酰化酶i进行固定化。
Acylase I was immobilized on Y-type molecular sieve by using 4 kinds of methods, namely, adsorption, adsorption-crosslink, coupling and coupling-diazotization.
介绍了一种采用固定化高效微生物与JADS曝气系统构成的处理高氨氮、高含硫废水的曝气生物流化床(ABFT)工艺。
Aerated biological fluid technology (ABFT) composed of fixed microorganism and JADS aeration system was adopted to treat high ammonia and high sulfide wastewater.
通过研究固定根区水分胁迫下氮形态对玉米水分利用的调节与作用机制，为局部根区灌溉水氮高效利用提供理论依据。
Regulation and the mechanisms of nitrogen form on water utilization of maize under fixed partial root-zone water stress conditions were investigated.
细绿萍对火气氮有固定作用，用于处理污水尚需慎重研究。
Azolla filiformis could fix nitrogen, so further research should be made to find out if it can be used in waste water treatment.
微生物在分解碳氢化合物，有些还能生成沼气，同时有基因在活跃地固定或转换含有氮和碳的气体。
Microbes were degrading hydrocarbons, some appeared to be capable of oxidising methane, and there were genes active in the process of fixing, or converting from a gas, both nitrogen and carbon.
综述了固定化微生物技术在废水脱氮处理中的应用。
The application of immobilized microorganism to remove nitrogen in wastewater treatment is summarized.
沸石对氨氮有很强的离子交换能力，此外还有固定微生物和调整自由胺和氨离子的平衡能力。
Zeolite has strong capacity of ion exchange for ammonia. In addition, it has the capacity of fixing microbes and adjusting the equilibrium of free amine and ammonia ions.
经顺丁烯二酰亚胺氮氧自由基自旋标记的牛和羊血清白蛋白，由于标记位点和标记物所处的周围环境不同，给出了两类ESR波谱：即强固定化作用型和弱固定化作用型。
When the nitroxide-maleimide was used to spin label bovine and sheep's serum albumin, two kinds of ESR spectra, i. e. "strongly immobilized" and "weakly immobilized", were obtained.
固定化细胞技术在处理高氨氮废水和焦化废水的中试和工业试验的成功，表明了这一技术在化工废水处理领域的广阔前景。
The successes of plant tests and pilot tests for the treatment of high ammonia-nitrogen and coking wastewater with IMCs technology indicated that the IMCs had a broad perspective.
对于把氮肥施在植物残体覆盖层以下是否会减少氮的固定，这个问题目前尚不清楚。
Whether placement of nitrogen fertilizer below the layer of crop residue will reduce nitrogen immobilization is not clear.
氰基细菌是已知唯一能够固定二氧化碳(有光情况下)和氮的微生物。
Cyanobacteria are the only known organisms capable of fixing both CARBON DIOXIDE (in the presence of light) and NITROGEN.
当处理有机氨氮废水时固定化硝化污泥颗粒和固定化活性污泥颗粒均可实现一定程度的单级生物脱氮。
When used to treat wastewater composed NH4+-N and organic carbon source, the nitrifying activated sludge pellets and the activated sludge pellets can also produce SND phenomenon in a certain extent.
当处理有机氨氮废水时固定化硝化污泥颗粒和固定化活性污泥颗粒均可实现一定程度的单级生物脱氮。
When used to treat wastewater composed NH4+-N and organic carbon source, the nitrifying activated sludge pellets and the activated sludge pellets can also produce SND phenomenon in a certain extent.
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