Measurement of fluid flow in closed conduites . velocity area method using pitot static tubes 密封管道中液体流量的测量.用皮托静压管的速度面积法
3.
Measurement of fluid flow in closed conduits - velocity area methods - method using pitot static tubes 封闭管道内液体流量测量.第2部分:速度范围法.第1节:皮托静压管法
4.
Measurement of fluid flow in closed conduits . velocity - area methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current - meters or pitot static tubes 密封管中流体流量的测定.用电流表或静压皮托管测量圆管道内回旋流或不对称流动流量的速度-面积法
5.
Measurement of fluid flow in closed conduits - velocity area methods - methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current - meters or pitot static tubes 封闭管道内液体流量测量.第2部分:速度范围法.第3节:用流量计或皮托静压管在圆形管道中涡流或不平衡流动条件下测量流量
