水质测定 meaning in Chinese

water-quality determination

Standard test method for portable chemiluminescent water quality determination
轻便式化学发光水质测定的标准试验方法
This results showed the program can be used to simulate the variation of sewage qulity validly and exactly in a sewer which has the same characteristic with that sewer . analysing the real data and simulation data ss and xs decreased apparently ; xbh increased apparently ; snh , snd , and xnd have little variation
对西安市某污水管道进行水质测定和模拟，各组分实测值与模拟值的相对误差均小于5 . 0说明两者较为吻合，应用模拟程序可以对具有上述管道特征的排水管道内水质变化进行有效和较为准确的模拟。