氮循环

The drum,screw, screen changer and die head are made of high quality alloyed steel (38CrMOAIA) with high hardness, strong corrosion resistance and long operating life after nitrogen treatment.

螺杆、料筒、换网器、模头均选用优质合金钢（38CrMoAIA），经氮化处理，硬度高、防腐能力强、使用寿命长；模头为衣架式支管递减型，流道利于熔料流动、无滞留现象，片材厚度均匀；压光琨内采用螺旋往复式水槽，水循环冷却，效果极佳；模头、换网器、料筒温度分段控制，整机传动同步运行。

Sewage Department, specializing in power plants, steel mills, chemical plants and other large-scale sewage treatment works to provide design and equipment, the company patented product "industrial life of recovery and recycling use of waste water treatment equipment","mud-money machine","water or aeration device,""rotary aeration sewage treatment plant","anaerobic / aerobic integrated ultra-deep-seated biological nitrogen removal from wastewater aeration method and device","Industrial Water Treatment Algicide use sterilization and synthesis methods,"" ultrasound device removal "and so on.

英语翻译恳求各位高手翻译成中文，污水处理部，专业从事电厂、钢厂、化工厂等大型污水处理工程设计和配套设备提供，公司专利产品&将工业生活废水回收循环利用的水处理设备&、&清泥机&、&跌水曝气装置&、&转盘式污水处理曝气装置&、&厌氧／好氧一体化超深层曝气废水生物脱氮方法及其装置&、&工业水处理用杀菌灭藻剂及其合成方法&、&超声波除藻装置&等。

Ecologists refer to the control of ecosystem function by nutrient flux and the condition of the physical environment as bottom-up control.

植物体 土壤 Fig。 13-15 温带和热带树林地的氮和磷的分布与循环。土壤 13.8 生产量可能会受到草食动物影响而增加，或减少。

In the simulation, the effects of the snorkel diameter, circulation flow rate , lift gas flow rate, oxygen content, and vacuum vessel pressure were taken into account.

对RH真空精炼时的脱碳、脱氧、脱氮和脱氢过程进行了动态模拟研究，考察了浸渍管直径、循环流量、吹氩量、氧含量和真空度对脱碳和脱气过程的影响。

Aerobic leachate recirculated landfill appears to be the most effective option in the removal of organic matter and ammonia.

好氧渗滤液循环垃圾在移除有机物和氨氮上似乎最有效。

In the spark-ignition engine, recirculating some of the exhaust gas reduces the emission of nitrogen oxides.

在火花点火的发动机中，再循环的一部分废气减少了氧化氮的有害污染物。

The results showed that the IVCW effectively removed total suspended solids(85%),chemical oxygen demand(50%),five-day biochemical oxygen demand(44%),total ammonia(53%),nitrite(83%) and nitrate(54%) from the aquaculture wastewater at a hydraulic loading rate of 420mm/d.

结果表明，在420 mm/d的水力负荷下，湿地可有效地去除循环水中的总悬浮物(去除率85%)、CODCr(去除率50%)、BOD5(去除率44%)、总氨氮(去除率53%)、亚硝酸盐(去除率83%)和硝酸盐(去除率54%)，能够满足养殖用水的要求，整个试验期间系统实现了零污水排放。

The results showed that the IVCW effectively removed total suspended solids (85%), chemical oxygen demand (50%), 5-day biochemical oxygen demand (44%), total ammonia (53%), nitrite (83%) and nitrate (54%) from the aquaculture wastewater at a hydraulic loading rate of 420mm/d.

结果表明，在420mm/d的水力负荷下，湿地可有效地去除循环水中的总悬浮物(去除率85%)、CODCr(去除率50%)、BOD5(去除率44%)、总氨氮(去除率53%)、亚硝酸盐(去除率83%)和硝酸盐(去除率54%)，能够满足养殖用水的要求，整个试验期间系统实现了零污水排放。

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。