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Research methods about standard samples of water quality determination of Kjeldahl nitrogen were put forward. 提出了水质凯氏氮标准样品的研究方法。
Water quality - Determination of cyanide index. 水质。氰化物指数的测定。
Optimum Conditions of Water Quality Determination of Ammonia-Nessler's Reagent Colorimetric Method 纳氏试剂光度法测定水中氨氮实验条件的优化
Three Dimensional Fluorescence Spectroscopy for Water Quality Determination in Water Treatment Plant 三维荧光技术用于给水的水质测定
DISCUSSION ON IRRIGATION WATER QUALITY DETERMINATION TABLE RECOMMENDED BY FAO OF THE UNITED NATIONS 试论联合国粮农组织推荐的灌溉水质确定表
Keywords Road runoff;Combined Sewer Overflows （CSO）;Water Quality Determination;Polution Prevention; 雨水径流;合流管道溢流水（CSO）;水质测定;污染控制;
Water quality - Determination of chemical oxygen demand (COD). 水质。氧的化学消耗量的测定(重铬酸钾法)
Water quality - Determination of dissolved carbon dioxide. 水质。溶解二氧化碳含量的测定。
Who sets the standard for water quality? 水质标准由谁来制定?
The plain water quality is very poor. 原水质很差。
Reveal long-term changes in water quality. 反映河溪水质的长期变化趋势。
Water quality can deteriorate in the summer. 夏季时水质会变坏。
See water quality solution above all. 首先看水质溶液。
Conclusion: Water quality of the headwater is bad. 结论：该市农村水源水水质差。
water quality determination 水质观测
The water quality of the offshore marine areas tended to improve. 近岸海域海水水质呈改善趋势。
The water quality remains the same as that in the previous year. 与上年相比，水质持平。
Every day the laboratory collects samples to monitor the water quality in Ago Bay. 每天，实验室都要在AGOBAY收集样品，监测水质。
It will give a warning if the product water quality is in failure. 产水水质不合格报警并排放。
Water quality and collection of sludge on the bottom of the pond. 水质问题,池底污染。