The paper presents the basic principle on the removal of nitrogen oxides upon SCR and discusses the various causes of toxic catalyzer. 本文介绍了SCR脱除氮氧化物的基本原理,并讨论了导致催化剂中毒的各种原因。
The removal of free iron oxides causes a considerable reduction in specific surface area, especially the external surface area. 红壤胶体的比表面较小,当去除游离氧化铁后,表面积特别是外表面积显著减小。
Idea innovative: As standard treatment, surgical removal of the testicles or medical castration requiring testosterone to castration levels, often causes to TCM kidney deficiency symptoms. 思路创新:晚期前列腺癌西医治疗&手术切除睾丸或药物去势,要求睾酮达到去势水平,这往往引起中医肾虚症状。
At present, worldwide drinking water is polluted. Conventional treatment is not very efficient in the removal of organic pollutants from source water and chlorination process causes the formation of organic halogen, which is more dangerous to health. 目前,我国的饮用水普遍受到了较为严重的污染,常规的水处理工艺去除水中的溶解性有机物效率低,而且,氯化过程形成的有机卤化物对人们的身体健康危害更大。
Removal of nitrate nitrogen by electrochemical method is a very effective and practical technology, it uses electronic as a reducing agent, adds no catalyst, causes no secondary pollution, and has simple equipments. 电化学去除水体中硝酸盐氮的技术是一项以电子为还原剂、无须添加任何催化剂、无二次污染、设备简单、非常有效且实用的脱氮技术。
Because of trauma, especially high-energy trauma, arthroplasty revision surgery, removal of bone tumor causes massive bone defect, and the patients need for bone substitute has been increasing greatly. 因为创伤,特别是高能量创伤、关节置换翻修术、骨肿瘤切除术等原因造成大块骨缺损,需要进行骨移植的患者不断增多,临床上对骨移植材料的需求越来越大。