在工业上广泛使用孔板流量计测量气体体积流量。
It has been widely accepted by the industry for measuring gas volumes.
额定泄放量是用标准状况下的气体体积表示的泄压设施的体积流量。
Rated relieving capacity is the flow capacity of a relief device expressed in terms of air flow at standard conditions ( SCFH or Nm3/h).
气体不仅密度低，而且具有很大的可压缩性，所以空气钻井的体积流量将随压力和温度变化，而压力和温度又随井深变化。
Air has a low density and great compressibility. The volumetric flow rate of air in air drilling varies with pressure and temperature, which in turn, change with WLL depth.
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