The study of the performance of nitrogen removal in horizontal subsurface constructed wetland with Arundo donax var.
采用花叶芦竹水平潜流人工湿地处理生活污水，对其脱氮性能进行研究。
The second part was mainly conducted to study the effects of four typical diets on rumen nitrogen metabolism, protein digestion and absorption in the small intestine, and dairy cow's milk performance.
本论文第二部分主要研究了四种不同精粗比典型日粮条件下泌乳奶牛瘤胃氮素代谢、小肠蛋白质的消化吸收及其对生产性能的影响。
Based on test the influence of oxygen content and various bituminous proportion in nitrogen transportation on burning course and conveyance performance of pulverized coal is analyzed.
根据氮气输送对煤粉燃烧过程和输送性能的试验，分析了氧含量、烟煤比例变化对煤粉燃烧过程和输送性能的影响。
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