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- nitrogen and phosphorous ratio 氮磷比
- For treatment effect, the removal of organic compounds was more important than nitrogen and phosphorous. 处理效果中有机物去除效果较氮磷去除效果重要;
- Overmuch input of chemical fertilizer (nitrogen and phosphorous) and pesticide is the main source of the agriculture non-point pollution. 农业生产中化肥和农药的不合理使用是导致农业面源污染的主要源头。
- It also summarizes basic principles on biological nitrogen and phosphorous removal as well as some new significant views. 另外,还简略介绍了生物除氮磷的基础理论。
- Under the effect of hydrodynamic, nitrogen and phosphor transport dynamically on the tidal flat and adsorb, release and exchange complexly with sediment. 在水动力作用下，氮、磷元素在潮滩上发生动力输移，并与沉积物之间进行复杂的吸附、释放和交换行为。
- Activated sludge model including carbon, nitrogen and phosphor removal. This is a modification of ASM2 in order to improve the accuracy of the predictions. 该模型包括了碳、氮和磷的去除。为了增加预测精度，本模型对ASM2进行了修正。
- Amount of Nitrogen and Phosphorous Fertilizer and Its Mixed Ratio 氮磷不同用量及配比对红花产量的研究
- More attentions have been paid to struvite formation from swine wastewater due to its simultaneously removal and recorery of nitrogen and phosphorous and realizing the resourcerization. 摘要采用磷酸铵镁结晶法处理猪场污水，可实现猪场污水氮磷的去除及资源的回收，有利于畜牧业及磷资源的可持续发展。
- thermionic nitrogen and phosphorous detector 热离子氮磷检测器
- soil nitrogen and phosphorous runoff 土壤氮磷流失
- nitrogen and phosphorous removal 脱氮除磷
- biological removal of nitrogen and phosphorous 生物脱氮除磷
- removal of nitrogen and phosphorous 氮磷去除
- Concentrations of nitrogen and phosphor 氮磷浓度
- watershed plateau loss of nitrogen and phosphor 氮磷流失
- nitrogen and phosphor effect model 氮磷效应模型
- nitrogen and phosphor wastewater N、P废水
- It is very important that discharges of nitrogen and phosphors in wastewater are controlled to prevent eutrophication in water bodies such as lakes and rivers. 控制污水中氮和磷的排放,对于防治水体富营养化是十分重要的。
- It was also found that the nitrogen and phospho... 与主要作物相比,水葫芦对氮与磷素营养的吸收能力较强。
- The key pollution indicators are ammonia nitrogen and BOD. 主要污染指标是氨氮和生化需氧量。
