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。
The on the spot inspection of natural gas orifice meter is adopting the transitivity calibration method taking Venturi nozzle as calibration scale.
音速喷嘴具有精度高、性能稳定，操作方便等优点，是理想的气体流量标准设备。
Sound speed nozzles have the advantages of high-accuracy, stable-performance and convenient to operate. It is an ideal standard gas flow rate facility.
研究表明，有机相连续时，与其它结构参数的喷嘴板相比，标准喷嘴板脉冲萃取柱具有操作通量大和稳定性好的优点。
The results indicate that the pulsed extraction column provides high operating capacity and stability using a standard nozzle plate rather than other cartridge geometry nozzle plates.
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