查询词典 nitrogen-free

NPR process ; Nitrogen and phosphorus removal ; Nitration and denitration ; Reclaimed water

NPR工艺；脱氮除磷；硝化反硝化；再生水

Through further research and experiments, we discussed the mechanism of nitrogen and phosphorus removal by these denitrification bacteria.

通过进一步的研究试验，探索了目标菌种脱氮除磷的机制。

The biochemical reaction mechanism and kinetics of denitrification are the theoretical foundation of biological nitrogen removal.

反硝化的生化机理及动力学是生物脱氮技术的理论基础。

How to improve denitrification process was the key to enhance nitrogen removal rate.

改善条件以促进反硝化反应是提高地下渗滤系统总氮去除率的关键。

The technology of biological nitrogen removal by nitrosification denitrification, which has been developing a few years, is the combination between the oxidation of ammonia and the deoxidation of nitrite.

亚硝酸型硝化反硝化生物脱氮技术是近年来发展起来的新型的生物脱氮技术，其实质是氨的氧化与亚硝氮的还原相偶联。

Keywords high nitrogen steel;deoxidation;slag

高氮钢；脱氧；渣

According to the chemical metallurgy principle of self-shielded weld and the analysis on the deoxidization and nitrogen fixation of the metal such as aluminium, titanium,and etc.

根据自保护焊接化学冶金原理，分析了铝、钛等金属对脱氧和固氮的作用，研究了适合自保护焊接合理的焊缝金属化学成

The mass transfer coefficients were obtained for deoxygenation from water by nitrogen stream.

本论文主要目的在於研究旋转填充床中，填充物型态对质传以及液体流态的影响。

The mass transfer coefficients were obtained for deoxygenation from water by nitrogen stream. Random packings were used with the variation in sizes, materials, shapes, surface properties together with some structured packings.

实验中以氮气气提水中溶氧为实验系统，比较液膜质传系数数值大小以得知质传效率的优劣，在填充物的部分则选用了13种不同尺寸大小、材质、形状、亲疏水表面及构造型态的填充物进行研究。

5Hours, the aeration time of deposal of nitrogen is 10minutes, the settlement time is 1hour, and finally draw.

实验证明：该系统强化了SBR工艺的脱氮除磷效果且运行稳定，抗冲击负荷能力强，达到了目前处理水不光要求去除有机物，氮和磷的含量必须达标的水处理新要求。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。