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- Analyzes the problems of ammonia and nitrogen emission and COD exceeding the standard during urea production,solves the problems through such measures as technical revamp and strengthening management. 针对尿素生产过程中,氨氮排放和COD易超标的问题进行了分析,通过技术改造、加强管理等措施,解决了排放超标问题。
- determination of ammonia and nitrogen 氨氮测定
- ammonia and nitrogen experiments 氨氮实验
- annealing in ammonia and nitrogen 氨气和氮气气氛下热处理
- waste water containing large quantities of ammonia and nitrogen 高氨氮废水
- Origin and Prevention of Ammonia and Nitrogen in Breeding Pond of Prawn 对虾养殖池中氨氮的成因及防治
- Research of Complete Mixing Model of Ammonia and Nitrogen, Chen Hang Reservoir 陈行水库氨氮完全混合模型研究
- Some Problems Watched out for in Assaying the Contents of Ammonia and Nitrogen 氨氮测定时应注意的几个问题
- What are the purposes of helium and nitrogen gas? 氦气与氮气在这套系统中有何作用？
- The trees capture dust, ammonia and odors in their leaves. 树能用它们的叶子收集灰尘、氨和气味。
- Research for eliminating ammonia and nitrogen in rainstorm run off with artificial wetlands 人工湿地对暴雨径流中氨氮的去除效果研究
- If it were not for oxygen and nitrogen in the air, no man could live on the earth. 大气中如果没有氧和氮，人就无法生存于地球了。
- Discussion on decreasing ammonia and nitrogen contentin waste water of ADC foamers by sodium hypochlorous 用次氯酸钠降低ADC发泡剂废水中氨氮的探讨
- The Degrading Technology of COD,Ammonia and Nitrogen in Coal Carbonization Waste 焦化废水COD氨氮降解技术
- Enrichment of organic matter and nitrogen in eroded bedloads. 侵蚀泥沙、有机质和全氮富集规律研究。
- But overdoses of sulfur and nitrogen cause crop damage. 但过量的硫磺和氮气却会造成收成的损害。
- Keywords the Hydrophytes Eutriphication Organic Ammonia and Nitrogen Phosphorus; 水生植物;富营养化;有机物;氨氮;总磷;
- They say much of the soil lacks enough phosphorus and nitrogen. 他们说当地的大部分土壤缺乏足够的磷和氮。
- The micropore diffusiviites of oxygen and nitrogen are obtained. 求得了氧、氮的扩散系数。
- They say much of the soil lacks enough phosphorus and nitrogen . 这些专家们认为许多土壤都缺少足够的磷和氮。
