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1·The most commonly used method for measurement of gas is the orifice meter.

孔板流量计是测量气体流量最常用的方法。

2·The on the spot inspection of natural gas orifice meter is adopting the transitivity calibration method taking Venturi nozzle as calibration scale.

天然气孔板流量计的现场检定，采用以文丘里音速喷嘴作为标准表的传递型校准法。

3·Experimental results indicated that maximum error of slotted orifice is less than 5%. The conclusion is available to the development of slotted orifice meter.

实验结果表明槽式孔板测量误差小于5%，研究结果对槽式孔板流量计的开发具有一定借鉴意义。

4·The paper introduces calculating method of energy consumpation caused by flowmeters, such as orifice flow meter, vortex flow meter, and illustrates magnitude of energy consumpation with examples.

介绍了孔板、涡街流量计测量不同流体时引起的能耗量的计算方法，举例说明了能耗量的大小。