| 1. | Determination of ammonia - nitrogen by ion selective electrode analysis
离子选择电极法测定氨氮浓度 |
| 2. | Study on dynamic change of three kinds of nitrogen in surface water of paddy field
稻田田面水中三氮浓度的动态变化特征研究 |
| 3. | Start - up experiment on nitrification of mid - low ammonia concentration wastewater in sbr biofilm reactor
反应器中低氨氮浓度废水亚硝化启动试验研究 |
| 4. | This is not the same as the views of " the concentration of no3 - is more than that of nh4 + ' s "
这不同于“地表水体中硝态氮的浓度远远大于铵态氮浓度”的看法。 |
| 5. | But the concentration of nh4 + decreased to the very low level in 7 - 10 days after fertilizer was applied
而田表水层中铵态氮浓度在施肥后第7 ? 10天左右均降至很低水平。 |
| 6. | Study on nitrogen concentration and deposition amount in wet deposition in typical wetland ecosystem of sanjiang plain
三江平原典型湿地系统湿沉降中氮浓度及沉降量初步研究 |
| 7. | A new method to determine the concentration of ammonia - nitrogen by ammonium ion selective electrode has been introduced in this paper
摘要本文介绍一种新型的测量氨氮浓度的方法铵离子选择电极分析法。 |
| 8. | Ambient air quality - standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
环境空气质量.利用化学发光测量二氧化氮和一氧化氮浓度的标准方法 |
| 9. | Ambient air quality - standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence
环境空气质量.利用化学发光测量二氧化氮和一氧化氮浓度的标准方法 |
| 10. | As in any medication for erectile dysfunction , antioxidants raise levels of nitric oxide , which in turn relaxes blood - vessel walls
就像任何治疗勃起障碍的药物一样，抗氧化物提高一氧化氮浓度，进而放松血管壁。 |
