Traditional orifice plate flowmeter had some demerits such as low measuring precision and high power dissipation.
传统孔板流量计测量精度较低，功耗较高。
The working principle of the orifice-plate measuring method of flow quantity was introduced.
介绍了孔板测量流量方法的工作原理。
The method of measuring is important to the measurement of natural gas flux for an intelligent orifice plate flow totalizer.
对于天然气计量用的智能孔板流量积算仪，流量的计算方法对计量结果有非常重要的意义。
The differential pressure fluctuation has a quite great influence upon the measure precision in measuring natural gas flow rate with the measuring device by use of standard orifice plate.
在采用标准孔板节流装置测量天然气流量时，盖压波动对测量精度影响甚大。
The flow coefficients of the orifice-plate flowmeters are experimentally studied with or without a rectifier at the lower reach of a space elbow in the measuring pipe of flow.
通过实验研究，观察分析了流量测量管路中空间弯头下游有(或无)整流器时对孔板流量计流量系数的影响。
The flow coefficients of the orifice-plate flowmeters are experimentally studied with or without a rectifier at the lower reach of a space elbow in the measuring pipe of flow.
通过实验研究，观察分析了流量测量管路中空间弯头下游有(或无)整流器时对孔板流量计流量系数的影响。
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