9ISO 5167-1, Measurement of Fluid Flow by Means of Pressure Differential Devices. Organisation for Stan- Dardisation [S]. Geneva, 1991.
10Yan Y, Thorpe R B. Flow Regime Transition due to Cavitation in the Flow through an Orifice. International Journal of Multiphase Flow[J]. 1990, 16 (6): 1023 - 1045.