The main functions of measuring instruments in water production are metering measurement and control measurement.
检测仪表在制水生产中的作用主要体现在两个方面，即计量检测和控制检测。
2
On the oilfields metering of water-content crude basically is by means of dynamic methods, people not much considers the allowable standard accuracy.
油田集输系统中的含水原油计量多采用动态计量方式，对计量准确度能否满足标准要求考虑较少。
3
Several factors effecting on BOD in the industrial waste water were studied by using the differential-pressure metering device of BOD, and the corresponding improving methods were put forward.